Home / 19,931.40-29,864.22-12,116.52

Finding the Fourth Proportional to 19,931.40, 29,864.22 and 12,116.52

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Solution

The fourth proportional to 19,931.40, 29,864.22 and 12,116.52 is: 18,154.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.40 : 29,864.22 = 12,116.52 : x
  2. Step 2: Convert to fraction form
    19,931.40/29,864.22 = 12,116.52/x
  3. Step 3: Cross multiply
    19,931.40x = 29,864.22 × 12,116.52
  4. Step 4: Simplify right side
    19,931.40x = 361,850,418.91
  5. Step 5: Solve for x
    x = 361,850,418.91/19,931.40
  6. Step 6: Final answer
    x = 18,154.79

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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.