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Finding the Fourth Proportional to 18,773.92, 25,912.64 and 13,484.64

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Solution

The fourth proportional to 18,773.92, 25,912.64 and 13,484.64 is: 18,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.92 : 25,912.64 = 13,484.64 : x
  2. Step 2: Convert to fraction form
    18,773.92/25,912.64 = 13,484.64/x
  3. Step 3: Cross multiply
    18,773.92x = 25,912.64 × 13,484.64
  4. Step 4: Simplify right side
    18,773.92x = 349,422,621.85
  5. Step 5: Solve for x
    x = 349,422,621.85/18,773.92
  6. Step 6: Final answer
    x = 18,612.13

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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.