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Finding the Fourth Proportional to 18,484.62, 27,728.45 and 7,385.24

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Solution

The fourth proportional to 18,484.62, 27,728.45 and 7,385.24 is: 11,078.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,484.62 : 27,728.45 = 7,385.24 : x
  2. Step 2: Convert to fraction form
    18,484.62/27,728.45 = 7,385.24/x
  3. Step 3: Cross multiply
    18,484.62x = 27,728.45 × 7,385.24
  4. Step 4: Simplify right side
    18,484.62x = 204,781,082.51
  5. Step 5: Solve for x
    x = 204,781,082.51/18,484.62
  6. Step 6: Final answer
    x = 11,078.46

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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.