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Finding the Fourth Proportional to 18,309.92, 25,254.79 and 11,240.24

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Solution

The fourth proportional to 18,309.92, 25,254.79 and 11,240.24 is: 15,503.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.92 : 25,254.79 = 11,240.24 : x
  2. Step 2: Convert to fraction form
    18,309.92/25,254.79 = 11,240.24/x
  3. Step 3: Cross multiply
    18,309.92x = 25,254.79 × 11,240.24
  4. Step 4: Simplify right side
    18,309.92x = 283,869,746.38
  5. Step 5: Solve for x
    x = 283,869,746.38/18,309.92
  6. Step 6: Final answer
    x = 15,503.61

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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.