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Finding the Fourth Proportional to 18,397.17, 27,719.73 and 15,182.28

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Solution

The fourth proportional to 18,397.17, 27,719.73 and 15,182.28 is: 22,875.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.17 : 27,719.73 = 15,182.28 : x
  2. Step 2: Convert to fraction form
    18,397.17/27,719.73 = 15,182.28/x
  3. Step 3: Cross multiply
    18,397.17x = 27,719.73 × 15,182.28
  4. Step 4: Simplify right side
    18,397.17x = 420,848,702.38
  5. Step 5: Solve for x
    x = 420,848,702.38/18,397.17
  6. Step 6: Final answer
    x = 22,875.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.