Home / 15,489.91-23,223.11-7,985.38

Finding the Fourth Proportional to 15,489.91, 23,223.11 and 7,985.38

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Solution

The fourth proportional to 15,489.91, 23,223.11 and 7,985.38 is: 11,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.91 : 23,223.11 = 7,985.38 : x
  2. Step 2: Convert to fraction form
    15,489.91/23,223.11 = 7,985.38/x
  3. Step 3: Cross multiply
    15,489.91x = 23,223.11 × 7,985.38
  4. Step 4: Simplify right side
    15,489.91x = 185,445,358.13
  5. Step 5: Solve for x
    x = 185,445,358.13/15,489.91
  6. Step 6: Final answer
    x = 11,972.01

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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.