Home / 15,524.31-21,422.91-8,450.76

Finding the Fourth Proportional to 15,524.31, 21,422.91 and 8,450.76

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Solution

The fourth proportional to 15,524.31, 21,422.91 and 8,450.76 is: 11,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,524.31 : 21,422.91 = 8,450.76 : x
  2. Step 2: Convert to fraction form
    15,524.31/21,422.91 = 8,450.76/x
  3. Step 3: Cross multiply
    15,524.31x = 21,422.91 × 8,450.76
  4. Step 4: Simplify right side
    15,524.31x = 181,039,870.91
  5. Step 5: Solve for x
    x = 181,039,870.91/15,524.31
  6. Step 6: Final answer
    x = 11,661.70

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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.