Home / 15,022.60-20,731.20-8,216.71

Finding the Fourth Proportional to 15,022.60, 20,731.20 and 8,216.71

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Solution

The fourth proportional to 15,022.60, 20,731.20 and 8,216.71 is: 11,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.60 : 20,731.20 = 8,216.71 : x
  2. Step 2: Convert to fraction form
    15,022.60/20,731.20 = 8,216.71/x
  3. Step 3: Cross multiply
    15,022.60x = 20,731.20 × 8,216.71
  4. Step 4: Simplify right side
    15,022.60x = 170,342,154.70
  5. Step 5: Solve for x
    x = 170,342,154.70/15,022.60
  6. Step 6: Final answer
    x = 11,339.06

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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.