Home / 15,523.75-21,422.15-8,450.18

Finding the Fourth Proportional to 15,523.75, 21,422.15 and 8,450.18

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Solution

The fourth proportional to 15,523.75, 21,422.15 and 8,450.18 is: 11,660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.75 : 21,422.15 = 8,450.18 : x
  2. Step 2: Convert to fraction form
    15,523.75/21,422.15 = 8,450.18/x
  3. Step 3: Cross multiply
    15,523.75x = 21,422.15 × 8,450.18
  4. Step 4: Simplify right side
    15,523.75x = 181,020,874.13
  5. Step 5: Solve for x
    x = 181,020,874.13/15,523.75
  6. Step 6: Final answer
    x = 11,660.90

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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.