Home / 20,112.61-27,755.05-11,159.96

Finding the Fourth Proportional to 20,112.61, 27,755.05 and 11,159.96

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Solution

The fourth proportional to 20,112.61, 27,755.05 and 11,159.96 is: 15,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.61 : 27,755.05 = 11,159.96 : x
  2. Step 2: Convert to fraction form
    20,112.61/27,755.05 = 11,159.96/x
  3. Step 3: Cross multiply
    20,112.61x = 27,755.05 × 11,159.96
  4. Step 4: Simplify right side
    20,112.61x = 309,745,192.00
  5. Step 5: Solve for x
    x = 309,745,192.00/20,112.61
  6. Step 6: Final answer
    x = 15,400.55

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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.