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Finding the Fourth Proportional to 18,635.61, 25,754.04 and 15,273.12

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Solution

The fourth proportional to 18,635.61, 25,754.04 and 15,273.12 is: 21,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.61 : 25,754.04 = 15,273.12 : x
  2. Step 2: Convert to fraction form
    18,635.61/25,754.04 = 15,273.12/x
  3. Step 3: Cross multiply
    18,635.61x = 25,754.04 × 15,273.12
  4. Step 4: Simplify right side
    18,635.61x = 393,344,543.40
  5. Step 5: Solve for x
    x = 393,344,543.40/18,635.61
  6. Step 6: Final answer
    x = 21,107.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.