Home / 15,761.30-21,750.32-8,591.29

Finding the Fourth Proportional to 15,761.30, 21,750.32 and 8,591.29

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Solution

The fourth proportional to 15,761.30, 21,750.32 and 8,591.29 is: 11,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.30 : 21,750.32 = 8,591.29 : x
  2. Step 2: Convert to fraction form
    15,761.30/21,750.32 = 8,591.29/x
  3. Step 3: Cross multiply
    15,761.30x = 21,750.32 × 8,591.29
  4. Step 4: Simplify right side
    15,761.30x = 186,863,273.82
  5. Step 5: Solve for x
    x = 186,863,273.82/15,761.30
  6. Step 6: Final answer
    x = 11,855.83

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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.