Home / 19,939.52-27,517.02-10,987.40

Finding the Fourth Proportional to 19,939.52, 27,517.02 and 10,987.40

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Solution

The fourth proportional to 19,939.52, 27,517.02 and 10,987.40 is: 15,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.52 : 27,517.02 = 10,987.40 : x
  2. Step 2: Convert to fraction form
    19,939.52/27,517.02 = 10,987.40/x
  3. Step 3: Cross multiply
    19,939.52x = 27,517.02 × 10,987.40
  4. Step 4: Simplify right side
    19,939.52x = 302,340,505.55
  5. Step 5: Solve for x
    x = 302,340,505.55/19,939.52
  6. Step 6: Final answer
    x = 15,162.88

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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.