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Finding the Fourth Proportional to 18,502.20, 27,770.70 and 9,743.40

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Solution

The fourth proportional to 18,502.20, 27,770.70 and 9,743.40 is: 14,624.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.20 : 27,770.70 = 9,743.40 : x
  2. Step 2: Convert to fraction form
    18,502.20/27,770.70 = 9,743.40/x
  3. Step 3: Cross multiply
    18,502.20x = 27,770.70 × 9,743.40
  4. Step 4: Simplify right side
    18,502.20x = 270,581,038.38
  5. Step 5: Solve for x
    x = 270,581,038.38/18,502.20
  6. Step 6: Final answer
    x = 14,624.26

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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.