Home / 21,232.68-31,854.42-12,474.96

Finding the Fourth Proportional to 21,232.68, 31,854.42 and 12,474.96

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Solution

The fourth proportional to 21,232.68, 31,854.42 and 12,474.96 is: 18,715.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.68 : 31,854.42 = 12,474.96 : x
  2. Step 2: Convert to fraction form
    21,232.68/31,854.42 = 12,474.96/x
  3. Step 3: Cross multiply
    21,232.68x = 31,854.42 × 12,474.96
  4. Step 4: Simplify right side
    21,232.68x = 397,382,615.32
  5. Step 5: Solve for x
    x = 397,382,615.32/21,232.68
  6. Step 6: Final answer
    x = 18,715.61

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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.