Home / 21,257.04-31,862.16-8,770.24

Finding the Fourth Proportional to 21,257.04, 31,862.16 and 8,770.24

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Solution

The fourth proportional to 21,257.04, 31,862.16 and 8,770.24 is: 13,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.04 : 31,862.16 = 8,770.24 : x
  2. Step 2: Convert to fraction form
    21,257.04/31,862.16 = 8,770.24/x
  3. Step 3: Cross multiply
    21,257.04x = 31,862.16 × 8,770.24
  4. Step 4: Simplify right side
    21,257.04x = 279,438,790.12
  5. Step 5: Solve for x
    x = 279,438,790.12/21,257.04
  6. Step 6: Final answer
    x = 13,145.71

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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.