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Finding the Fourth Proportional to 18,353.64, 27,472.08 and 13,134

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Solution

The fourth proportional to 18,353.64, 27,472.08 and 13,134 is: 19,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.64 : 27,472.08 = 13,134 : x
  2. Step 2: Convert to fraction form
    18,353.64/27,472.08 = 13,134/x
  3. Step 3: Cross multiply
    18,353.64x = 27,472.08 × 13,134
  4. Step 4: Simplify right side
    18,353.64x = 360,818,298.72
  5. Step 5: Solve for x
    x = 360,818,298.72/18,353.64
  6. Step 6: Final answer
    x = 19,659.22

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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.