Home / 21,387.60-29,516.22-11,956.14

Finding the Fourth Proportional to 21,387.60, 29,516.22 and 11,956.14

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Solution

The fourth proportional to 21,387.60, 29,516.22 and 11,956.14 is: 16,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.60 : 29,516.22 = 11,956.14 : x
  2. Step 2: Convert to fraction form
    21,387.60/29,516.22 = 11,956.14/x
  3. Step 3: Cross multiply
    21,387.60x = 29,516.22 × 11,956.14
  4. Step 4: Simplify right side
    21,387.60x = 352,900,058.59
  5. Step 5: Solve for x
    x = 352,900,058.59/21,387.60
  6. Step 6: Final answer
    x = 16,500.22

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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.