Home / 20,663,423.80-30,995,135.70-18,143,999.80

Finding the Fourth Proportional to 20,663,423.80, 30,995,135.70 and 18,143,999.80

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Solution

The fourth proportional to 20,663,423.80, 30,995,135.70 and 18,143,999.80 is: 27,215,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663,423.80 : 30,995,135.70 = 18,143,999.80 : x
  2. Step 2: Convert to fraction form
    20,663,423.80/30,995,135.70 = 18,143,999.80/x
  3. Step 3: Cross multiply
    20,663,423.80x = 30,995,135.70 × 18,143,999.80
  4. Step 4: Simplify right side
    20,663,423.80x = 562,375,735,941,772.88
  5. Step 5: Solve for x
    x = 562,375,735,941,772.88/20,663,423.80
  6. Step 6: Final answer
    x = 27,215,999.70

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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.