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Finding the Fourth Proportional to 11,388.40, 17,068.20 and 10,092.40

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Solution

The fourth proportional to 11,388.40, 17,068.20 and 10,092.40 is: 15,125.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.40 : 17,068.20 = 10,092.40 : x
  2. Step 2: Convert to fraction form
    11,388.40/17,068.20 = 10,092.40/x
  3. Step 3: Cross multiply
    11,388.40x = 17,068.20 × 10,092.40
  4. Step 4: Simplify right side
    11,388.40x = 172,259,101.68
  5. Step 5: Solve for x
    x = 172,259,101.68/11,388.40
  6. Step 6: Final answer
    x = 15,125.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.