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Finding the Fourth Proportional to 18,468.28, 27,681.38 and 7,935.16

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Solution

The fourth proportional to 18,468.28, 27,681.38 and 7,935.16 is: 11,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.28 : 27,681.38 = 7,935.16 : x
  2. Step 2: Convert to fraction form
    18,468.28/27,681.38 = 7,935.16/x
  3. Step 3: Cross multiply
    18,468.28x = 27,681.38 × 7,935.16
  4. Step 4: Simplify right side
    18,468.28x = 219,656,179.32
  5. Step 5: Solve for x
    x = 219,656,179.32/18,468.28
  6. Step 6: Final answer
    x = 11,893.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.