Home / 20,750.10-28,635.17-11,318.82

Finding the Fourth Proportional to 20,750.10, 28,635.17 and 11,318.82

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Solution

The fourth proportional to 20,750.10, 28,635.17 and 11,318.82 is: 15,619.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.10 : 28,635.17 = 11,318.82 : x
  2. Step 2: Convert to fraction form
    20,750.10/28,635.17 = 11,318.82/x
  3. Step 3: Cross multiply
    20,750.10x = 28,635.17 × 11,318.82
  4. Step 4: Simplify right side
    20,750.10x = 324,116,278.31
  5. Step 5: Solve for x
    x = 324,116,278.31/20,750.10
  6. Step 6: Final answer
    x = 15,619.99

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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.