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Finding the Fourth Proportional to 18,547.20, 27,772.20 and 14,626.80

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Solution

The fourth proportional to 18,547.20, 27,772.20 and 14,626.80 is: 21,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.20 : 27,772.20 = 14,626.80 : x
  2. Step 2: Convert to fraction form
    18,547.20/27,772.20 = 14,626.80/x
  3. Step 3: Cross multiply
    18,547.20x = 27,772.20 × 14,626.80
  4. Step 4: Simplify right side
    18,547.20x = 406,218,414.96
  5. Step 5: Solve for x
    x = 406,218,414.96/18,547.20
  6. Step 6: Final answer
    x = 21,901.87

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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.