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Finding the Fourth Proportional to 18,430.61, 27,654.08 and 9,663.44

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Solution

The fourth proportional to 18,430.61, 27,654.08 and 9,663.44 is: 14,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.61 : 27,654.08 = 9,663.44 : x
  2. Step 2: Convert to fraction form
    18,430.61/27,654.08 = 9,663.44/x
  3. Step 3: Cross multiply
    18,430.61x = 27,654.08 × 9,663.44
  4. Step 4: Simplify right side
    18,430.61x = 267,233,356.25
  5. Step 5: Solve for x
    x = 267,233,356.25/18,430.61
  6. Step 6: Final answer
    x = 14,499.43

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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.