Home / 15,474.98-21,356.80-8,761.79

Finding the Fourth Proportional to 15,474.98, 21,356.80 and 8,761.79

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Solution

The fourth proportional to 15,474.98, 21,356.80 and 8,761.79 is: 12,092.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.98 : 21,356.80 = 8,761.79 : x
  2. Step 2: Convert to fraction form
    15,474.98/21,356.80 = 8,761.79/x
  3. Step 3: Cross multiply
    15,474.98x = 21,356.80 × 8,761.79
  4. Step 4: Simplify right side
    15,474.98x = 187,123,828.16
  5. Step 5: Solve for x
    x = 187,123,828.16/15,474.98
  6. Step 6: Final answer
    x = 12,092.02

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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.