Home / 21,306.60-29,403.62-11,874.92

Finding the Fourth Proportional to 21,306.60, 29,403.62 and 11,874.92

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Solution

The fourth proportional to 21,306.60, 29,403.62 and 11,874.92 is: 16,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.60 : 29,403.62 = 11,874.92 : x
  2. Step 2: Convert to fraction form
    21,306.60/29,403.62 = 11,874.92/x
  3. Step 3: Cross multiply
    21,306.60x = 29,403.62 × 11,874.92
  4. Step 4: Simplify right side
    21,306.60x = 349,165,635.21
  5. Step 5: Solve for x
    x = 349,165,635.21/21,306.60
  6. Step 6: Final answer
    x = 16,387.67

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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.