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Finding the Fourth Proportional to 18,086.76, 24,959.79 and 10,129.14

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Solution

The fourth proportional to 18,086.76, 24,959.79 and 10,129.14 is: 13,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,086.76 : 24,959.79 = 10,129.14 : x
  2. Step 2: Convert to fraction form
    18,086.76/24,959.79 = 10,129.14/x
  3. Step 3: Cross multiply
    18,086.76x = 24,959.79 × 10,129.14
  4. Step 4: Simplify right side
    18,086.76x = 252,821,207.28
  5. Step 5: Solve for x
    x = 252,821,207.28/18,086.76
  6. Step 6: Final answer
    x = 13,978.25

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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.