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Finding the Fourth Proportional to 18,181.92, 25,092.95 and 11,113.05

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Solution

The fourth proportional to 18,181.92, 25,092.95 and 11,113.05 is: 15,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.92 : 25,092.95 = 11,113.05 : x
  2. Step 2: Convert to fraction form
    18,181.92/25,092.95 = 11,113.05/x
  3. Step 3: Cross multiply
    18,181.92x = 25,092.95 × 11,113.05
  4. Step 4: Simplify right side
    18,181.92x = 278,859,152.43
  5. Step 5: Solve for x
    x = 278,859,152.43/18,181.92
  6. Step 6: Final answer
    x = 15,337.17

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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.