Home / 20,070.38-27,671.96-12,887.61

Finding the Fourth Proportional to 20,070.38, 27,671.96 and 12,887.61

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Solution

The fourth proportional to 20,070.38, 27,671.96 and 12,887.61 is: 17,768.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.38 : 27,671.96 = 12,887.61 : x
  2. Step 2: Convert to fraction form
    20,070.38/27,671.96 = 12,887.61/x
  3. Step 3: Cross multiply
    20,070.38x = 27,671.96 × 12,887.61
  4. Step 4: Simplify right side
    20,070.38x = 356,625,356.86
  5. Step 5: Solve for x
    x = 356,625,356.86/20,070.38
  6. Step 6: Final answer
    x = 17,768.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.