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Finding the Fourth Proportional to 15,043.65, 20,761.44 and 8,331.41

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Solution

The fourth proportional to 15,043.65, 20,761.44 and 8,331.41 is: 11,498.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.65 : 20,761.44 = 8,331.41 : x
  2. Step 2: Convert to fraction form
    15,043.65/20,761.44 = 8,331.41/x
  3. Step 3: Cross multiply
    15,043.65x = 20,761.44 × 8,331.41
  4. Step 4: Simplify right side
    15,043.65x = 172,972,068.83
  5. Step 5: Solve for x
    x = 172,972,068.83/15,043.65
  6. Step 6: Final answer
    x = 11,498.01

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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.