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Finding the Fourth Proportional to 16,139.78, 22,277.12 and 9,068.48

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Solution

The fourth proportional to 16,139.78, 22,277.12 and 9,068.48 is: 12,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,139.78 : 22,277.12 = 9,068.48 : x
  2. Step 2: Convert to fraction form
    16,139.78/22,277.12 = 9,068.48/x
  3. Step 3: Cross multiply
    16,139.78x = 22,277.12 × 9,068.48
  4. Step 4: Simplify right side
    16,139.78x = 202,019,617.18
  5. Step 5: Solve for x
    x = 202,019,617.18/16,139.78
  6. Step 6: Final answer
    x = 12,516.88

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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.