Home / 21,217.80-31,837.62-8,747.04

Finding the Fourth Proportional to 21,217.80, 31,837.62 and 8,747.04

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Solution

The fourth proportional to 21,217.80, 31,837.62 and 8,747.04 is: 13,125.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.80 : 31,837.62 = 8,747.04 : x
  2. Step 2: Convert to fraction form
    21,217.80/31,837.62 = 8,747.04/x
  3. Step 3: Cross multiply
    21,217.80x = 31,837.62 × 8,747.04
  4. Step 4: Simplify right side
    21,217.80x = 278,484,935.64
  5. Step 5: Solve for x
    x = 278,484,935.64/21,217.80
  6. Step 6: Final answer
    x = 13,125.06

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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.