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Finding the Fourth Proportional to 18,422.76, 27,634.05 and 5,275.13

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Solution

The fourth proportional to 18,422.76, 27,634.05 and 5,275.13 is: 7,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.76 : 27,634.05 = 5,275.13 : x
  2. Step 2: Convert to fraction form
    18,422.76/27,634.05 = 5,275.13/x
  3. Step 3: Cross multiply
    18,422.76x = 27,634.05 × 5,275.13
  4. Step 4: Simplify right side
    18,422.76x = 145,773,068.01
  5. Step 5: Solve for x
    x = 145,773,068.01/18,422.76
  6. Step 6: Final answer
    x = 7,912.66

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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.