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Finding the Fourth Proportional to 18,490.20, 27,752.70 and 9,731.40

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Solution

The fourth proportional to 18,490.20, 27,752.70 and 9,731.40 is: 14,606.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.20 : 27,752.70 = 9,731.40 : x
  2. Step 2: Convert to fraction form
    18,490.20/27,752.70 = 9,731.40/x
  3. Step 3: Cross multiply
    18,490.20x = 27,752.70 × 9,731.40
  4. Step 4: Simplify right side
    18,490.20x = 270,072,624.78
  5. Step 5: Solve for x
    x = 270,072,624.78/18,490.20
  6. Step 6: Final answer
    x = 14,606.26

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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.