Home / 21,306.25-29,403.63-11,874.88

Finding the Fourth Proportional to 21,306.25, 29,403.63 and 11,874.88

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Solution

The fourth proportional to 21,306.25, 29,403.63 and 11,874.88 is: 16,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.25 : 29,403.63 = 11,874.88 : x
  2. Step 2: Convert to fraction form
    21,306.25/29,403.63 = 11,874.88/x
  3. Step 3: Cross multiply
    21,306.25x = 29,403.63 × 11,874.88
  4. Step 4: Simplify right side
    21,306.25x = 349,164,371.42
  5. Step 5: Solve for x
    x = 349,164,371.42/21,306.25
  6. Step 6: Final answer
    x = 16,387.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.