Home / 20,079.66-27,711.90-11,127.17

Finding the Fourth Proportional to 20,079.66, 27,711.90 and 11,127.17

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Solution

The fourth proportional to 20,079.66, 27,711.90 and 11,127.17 is: 15,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.66 : 27,711.90 = 11,127.17 : x
  2. Step 2: Convert to fraction form
    20,079.66/27,711.90 = 11,127.17/x
  3. Step 3: Cross multiply
    20,079.66x = 27,711.90 × 11,127.17
  4. Step 4: Simplify right side
    20,079.66x = 308,355,086.55
  5. Step 5: Solve for x
    x = 308,355,086.55/20,079.66
  6. Step 6: Final answer
    x = 15,356.59

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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.