Home / 20,142.27-27,789.48-11,642.13

Finding the Fourth Proportional to 20,142.27, 27,789.48 and 11,642.13

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Solution

The fourth proportional to 20,142.27, 27,789.48 and 11,642.13 is: 16,062.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.27 : 27,789.48 = 11,642.13 : x
  2. Step 2: Convert to fraction form
    20,142.27/27,789.48 = 11,642.13/x
  3. Step 3: Cross multiply
    20,142.27x = 27,789.48 × 11,642.13
  4. Step 4: Simplify right side
    20,142.27x = 323,528,738.79
  5. Step 5: Solve for x
    x = 323,528,738.79/20,142.27
  6. Step 6: Final answer
    x = 16,062.18

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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.