Home / 20,079.89-27,710.47-11,127.57

Finding the Fourth Proportional to 20,079.89, 27,710.47 and 11,127.57

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Solution

The fourth proportional to 20,079.89, 27,710.47 and 11,127.57 is: 15,356.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.89 : 27,710.47 = 11,127.57 : x
  2. Step 2: Convert to fraction form
    20,079.89/27,710.47 = 11,127.57/x
  3. Step 3: Cross multiply
    20,079.89x = 27,710.47 × 11,127.57
  4. Step 4: Simplify right side
    20,079.89x = 308,350,194.66
  5. Step 5: Solve for x
    x = 308,350,194.66/20,079.89
  6. Step 6: Final answer
    x = 15,356.17

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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.