Home / 13,979.50-20,919.02-10,272.53

Finding the Fourth Proportional to 13,979.50, 20,919.02 and 10,272.53

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Solution

The fourth proportional to 13,979.50, 20,919.02 and 10,272.53 is: 15,371.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.50 : 20,919.02 = 10,272.53 : x
  2. Step 2: Convert to fraction form
    13,979.50/20,919.02 = 10,272.53/x
  3. Step 3: Cross multiply
    13,979.50x = 20,919.02 × 10,272.53
  4. Step 4: Simplify right side
    13,979.50x = 214,891,260.52
  5. Step 5: Solve for x
    x = 214,891,260.52/13,979.50
  6. Step 6: Final answer
    x = 15,371.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.