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Finding the Fourth Proportional to 18,569.43, 27,853.85 and 7,475.85

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Solution

The fourth proportional to 18,569.43, 27,853.85 and 7,475.85 is: 11,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.43 : 27,853.85 = 7,475.85 : x
  2. Step 2: Convert to fraction form
    18,569.43/27,853.85 = 7,475.85/x
  3. Step 3: Cross multiply
    18,569.43x = 27,853.85 × 7,475.85
  4. Step 4: Simplify right side
    18,569.43x = 208,231,065.25
  5. Step 5: Solve for x
    x = 208,231,065.25/18,569.43
  6. Step 6: Final answer
    x = 11,213.65

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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.