Home / 20,079.17-27,709.44-11,126.78

Finding the Fourth Proportional to 20,079.17, 27,709.44 and 11,126.78

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Solution

The fourth proportional to 20,079.17, 27,709.44 and 11,126.78 is: 15,355.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.17 : 27,709.44 = 11,126.78 : x
  2. Step 2: Convert to fraction form
    20,079.17/27,709.44 = 11,126.78/x
  3. Step 3: Cross multiply
    20,079.17x = 27,709.44 × 11,126.78
  4. Step 4: Simplify right side
    20,079.17x = 308,316,842.80
  5. Step 5: Solve for x
    x = 308,316,842.80/20,079.17
  6. Step 6: Final answer
    x = 15,355.06

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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.