Home / 19,932.40-29,865.72-12,117.52

Finding the Fourth Proportional to 19,932.40, 29,865.72 and 12,117.52

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Solution

The fourth proportional to 19,932.40, 29,865.72 and 12,117.52 is: 18,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,932.40 : 29,865.72 = 12,117.52 : x
  2. Step 2: Convert to fraction form
    19,932.40/29,865.72 = 12,117.52/x
  3. Step 3: Cross multiply
    19,932.40x = 29,865.72 × 12,117.52
  4. Step 4: Simplify right side
    19,932.40x = 361,898,459.41
  5. Step 5: Solve for x
    x = 361,898,459.41/19,932.40
  6. Step 6: Final answer
    x = 18,156.29

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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.