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Finding the Fourth Proportional to 18,609.30, 27,861.30 and 14,456.70

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Solution

The fourth proportional to 18,609.30, 27,861.30 and 14,456.70 is: 21,644.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.30 : 27,861.30 = 14,456.70 : x
  2. Step 2: Convert to fraction form
    18,609.30/27,861.30 = 14,456.70/x
  3. Step 3: Cross multiply
    18,609.30x = 27,861.30 × 14,456.70
  4. Step 4: Simplify right side
    18,609.30x = 402,782,455.71
  5. Step 5: Solve for x
    x = 402,782,455.71/18,609.30
  6. Step 6: Final answer
    x = 21,644.15

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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.