Home / 20,668,609,774.20-31,002,914,661.30-18,219,729,646.20

Finding the Fourth Proportional to 20,668,609,774.20, 31,002,914,661.30 and 18,219,729,646.20

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Solution

The fourth proportional to 20,668,609,774.20, 31,002,914,661.30 and 18,219,729,646.20 is: 27,329,594,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668,609,774.20 : 31,002,914,661.30 = 18,219,729,646.20 : x
  2. Step 2: Convert to fraction form
    20,668,609,774.20/31,002,914,661.30 = 18,219,729,646.20/x
  3. Step 3: Cross multiply
    20,668,609,774.20x = 31,002,914,661.30 × 18,219,729,646.20
  4. Step 4: Simplify right side
    20,668,609,774.20x = 564,864,723,373,096,239,104
  5. Step 5: Solve for x
    x = 564,864,723,373,096,239,104/20,668,609,774.20
  6. Step 6: Final answer
    x = 27,329,594,469.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.