Home / 28,101.06-42,120.27-12,516.66

Finding the Fourth Proportional to 28,101.06, 42,120.27 and 12,516.66

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Solution

The fourth proportional to 28,101.06, 42,120.27 and 12,516.66 is: 18,761.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.06 : 42,120.27 = 12,516.66 : x
  2. Step 2: Convert to fraction form
    28,101.06/42,120.27 = 12,516.66/x
  3. Step 3: Cross multiply
    28,101.06x = 42,120.27 × 12,516.66
  4. Step 4: Simplify right side
    28,101.06x = 527,205,098.70
  5. Step 5: Solve for x
    x = 527,205,098.70/28,101.06
  6. Step 6: Final answer
    x = 18,761.04

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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.