Home / 21,017.22-31,498.57-8,522.65

Finding the Fourth Proportional to 21,017.22, 31,498.57 and 8,522.65

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Solution

The fourth proportional to 21,017.22, 31,498.57 and 8,522.65 is: 12,772.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.22 : 31,498.57 = 8,522.65 : x
  2. Step 2: Convert to fraction form
    21,017.22/31,498.57 = 8,522.65/x
  3. Step 3: Cross multiply
    21,017.22x = 31,498.57 × 8,522.65
  4. Step 4: Simplify right side
    21,017.22x = 268,451,287.61
  5. Step 5: Solve for x
    x = 268,451,287.61/21,017.22
  6. Step 6: Final answer
    x = 12,772.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.