Home / 21,248.46-31,844.88-8,754.21

Finding the Fourth Proportional to 21,248.46, 31,844.88 and 8,754.21

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Solution

The fourth proportional to 21,248.46, 31,844.88 and 8,754.21 is: 13,119.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.46 : 31,844.88 = 8,754.21 : x
  2. Step 2: Convert to fraction form
    21,248.46/31,844.88 = 8,754.21/x
  3. Step 3: Cross multiply
    21,248.46x = 31,844.88 × 8,754.21
  4. Step 4: Simplify right side
    21,248.46x = 278,776,766.94
  5. Step 5: Solve for x
    x = 278,776,766.94/21,248.46
  6. Step 6: Final answer
    x = 13,119.86

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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.