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Finding the Fourth Proportional to 18,449.92, 25,464 and 10,999.36

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Solution

The fourth proportional to 18,449.92, 25,464 and 10,999.36 is: 15,180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.92 : 25,464 = 10,999.36 : x
  2. Step 2: Convert to fraction form
    18,449.92/25,464 = 10,999.36/x
  3. Step 3: Cross multiply
    18,449.92x = 25,464 × 10,999.36
  4. Step 4: Simplify right side
    18,449.92x = 280,087,703.04
  5. Step 5: Solve for x
    x = 280,087,703.04/18,449.92
  6. Step 6: Final answer
    x = 15,180.97

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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.