Home / 20,272.59-27,976.02-11,320.02

Finding the Fourth Proportional to 20,272.59, 27,976.02 and 11,320.02

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Solution

The fourth proportional to 20,272.59, 27,976.02 and 11,320.02 is: 15,621.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.59 : 27,976.02 = 11,320.02 : x
  2. Step 2: Convert to fraction form
    20,272.59/27,976.02 = 11,320.02/x
  3. Step 3: Cross multiply
    20,272.59x = 27,976.02 × 11,320.02
  4. Step 4: Simplify right side
    20,272.59x = 316,689,105.92
  5. Step 5: Solve for x
    x = 316,689,105.92/20,272.59
  6. Step 6: Final answer
    x = 15,621.54

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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.