Home / 27,891.22-38,489.02-15,143.80

Finding the Fourth Proportional to 27,891.22, 38,489.02 and 15,143.80

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Solution

The fourth proportional to 27,891.22, 38,489.02 and 15,143.80 is: 20,897.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,891.22 : 38,489.02 = 15,143.80 : x
  2. Step 2: Convert to fraction form
    27,891.22/38,489.02 = 15,143.80/x
  3. Step 3: Cross multiply
    27,891.22x = 38,489.02 × 15,143.80
  4. Step 4: Simplify right side
    27,891.22x = 582,870,021.08
  5. Step 5: Solve for x
    x = 582,870,021.08/27,891.22
  6. Step 6: Final answer
    x = 20,897.98

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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.