Home / 21,191.08-31,761.82-14,162.60

Finding the Fourth Proportional to 21,191.08, 31,761.82 and 14,162.60

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Solution

The fourth proportional to 21,191.08, 31,761.82 and 14,162.60 is: 21,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.08 : 31,761.82 = 14,162.60 : x
  2. Step 2: Convert to fraction form
    21,191.08/31,761.82 = 14,162.60/x
  3. Step 3: Cross multiply
    21,191.08x = 31,761.82 × 14,162.60
  4. Step 4: Simplify right side
    21,191.08x = 449,829,951.93
  5. Step 5: Solve for x
    x = 449,829,951.93/21,191.08
  6. Step 6: Final answer
    x = 21,227.33

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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.