Home / 19,937.90-29,931.15-10,072.10

Finding the Fourth Proportional to 19,937.90, 29,931.15 and 10,072.10

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Solution

The fourth proportional to 19,937.90, 29,931.15 and 10,072.10 is: 15,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.90 : 29,931.15 = 10,072.10 : x
  2. Step 2: Convert to fraction form
    19,937.90/29,931.15 = 10,072.10/x
  3. Step 3: Cross multiply
    19,937.90x = 29,931.15 × 10,072.10
  4. Step 4: Simplify right side
    19,937.90x = 301,469,535.92
  5. Step 5: Solve for x
    x = 301,469,535.92/19,937.90
  6. Step 6: Final answer
    x = 15,120.43

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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.