Home / 20,536,356.45-28,339,048.11-11,242,128.90

Finding the Fourth Proportional to 20,536,356.45, 28,339,048.11 and 11,242,128.90

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Solution

The fourth proportional to 20,536,356.45, 28,339,048.11 and 11,242,128.90 is: 15,513,522.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536,356.45 : 28,339,048.11 = 11,242,128.90 : x
  2. Step 2: Convert to fraction form
    20,536,356.45/28,339,048.11 = 11,242,128.90/x
  3. Step 3: Cross multiply
    20,536,356.45x = 28,339,048.11 × 11,242,128.90
  4. Step 4: Simplify right side
    20,536,356.45x = 318,591,231,755,921.38
  5. Step 5: Solve for x
    x = 318,591,231,755,921.38/20,536,356.45
  6. Step 6: Final answer
    x = 15,513,522.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.