Home / 15,043.49-20,761.19-8,329.75

Finding the Fourth Proportional to 15,043.49, 20,761.19 and 8,329.75

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Solution

The fourth proportional to 15,043.49, 20,761.19 and 8,329.75 is: 11,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.49 : 20,761.19 = 8,329.75 : x
  2. Step 2: Convert to fraction form
    15,043.49/20,761.19 = 8,329.75/x
  3. Step 3: Cross multiply
    15,043.49x = 20,761.19 × 8,329.75
  4. Step 4: Simplify right side
    15,043.49x = 172,935,376.95
  5. Step 5: Solve for x
    x = 172,935,376.95/15,043.49
  6. Step 6: Final answer
    x = 11,495.70

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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.