Home / 20,086.98-27,685.45-13,360.59

Finding the Fourth Proportional to 20,086.98, 27,685.45 and 13,360.59

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Solution

The fourth proportional to 20,086.98, 27,685.45 and 13,360.59 is: 18,414.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.98 : 27,685.45 = 13,360.59 : x
  2. Step 2: Convert to fraction form
    20,086.98/27,685.45 = 13,360.59/x
  3. Step 3: Cross multiply
    20,086.98x = 27,685.45 × 13,360.59
  4. Step 4: Simplify right side
    20,086.98x = 369,893,879.61
  5. Step 5: Solve for x
    x = 369,893,879.61/20,086.98
  6. Step 6: Final answer
    x = 18,414.61

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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.