Home / 20,215,811.40-30,323,717.10-18,032,310.60

Finding the Fourth Proportional to 20,215,811.40, 30,323,717.10 and 18,032,310.60

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Solution

The fourth proportional to 20,215,811.40, 30,323,717.10 and 18,032,310.60 is: 27,048,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215,811.40 : 30,323,717.10 = 18,032,310.60 : x
  2. Step 2: Convert to fraction form
    20,215,811.40/30,323,717.10 = 18,032,310.60/x
  3. Step 3: Cross multiply
    20,215,811.40x = 30,323,717.10 × 18,032,310.60
  4. Step 4: Simplify right side
    20,215,811.40x = 546,806,685,293,731.31
  5. Step 5: Solve for x
    x = 546,806,685,293,731.31/20,215,811.40
  6. Step 6: Final answer
    x = 27,048,465.90

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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.