Home / 20,129.40-30,116.34-10,901.88

Finding the Fourth Proportional to 20,129.40, 30,116.34 and 10,901.88

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Solution

The fourth proportional to 20,129.40, 30,116.34 and 10,901.88 is: 16,310.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.40 : 30,116.34 = 10,901.88 : x
  2. Step 2: Convert to fraction form
    20,129.40/30,116.34 = 10,901.88/x
  3. Step 3: Cross multiply
    20,129.40x = 30,116.34 × 10,901.88
  4. Step 4: Simplify right side
    20,129.40x = 328,324,724.72
  5. Step 5: Solve for x
    x = 328,324,724.72/20,129.40
  6. Step 6: Final answer
    x = 16,310.71

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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.