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Finding the Fourth Proportional to 18,387.72, 27,592.08 and 15,305.07

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Solution

The fourth proportional to 18,387.72, 27,592.08 and 15,305.07 is: 22,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.72 : 27,592.08 = 15,305.07 : x
  2. Step 2: Convert to fraction form
    18,387.72/27,592.08 = 15,305.07/x
  3. Step 3: Cross multiply
    18,387.72x = 27,592.08 × 15,305.07
  4. Step 4: Simplify right side
    18,387.72x = 422,298,715.85
  5. Step 5: Solve for x
    x = 422,298,715.85/18,387.72
  6. Step 6: Final answer
    x = 22,966.34

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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.