Home / 19,840.52-29,715.20-11,499.90

Finding the Fourth Proportional to 19,840.52, 29,715.20 and 11,499.90

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Solution

The fourth proportional to 19,840.52, 29,715.20 and 11,499.90 is: 17,223.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.52 : 29,715.20 = 11,499.90 : x
  2. Step 2: Convert to fraction form
    19,840.52/29,715.20 = 11,499.90/x
  3. Step 3: Cross multiply
    19,840.52x = 29,715.20 × 11,499.90
  4. Step 4: Simplify right side
    19,840.52x = 341,721,828.48
  5. Step 5: Solve for x
    x = 341,721,828.48/19,840.52
  6. Step 6: Final answer
    x = 17,223.43

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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.