Home / 15,147.39-22,719.45-5,286.86

Finding the Fourth Proportional to 15,147.39, 22,719.45 and 5,286.86

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Solution

The fourth proportional to 15,147.39, 22,719.45 and 5,286.86 is: 7,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.39 : 22,719.45 = 5,286.86 : x
  2. Step 2: Convert to fraction form
    15,147.39/22,719.45 = 5,286.86/x
  3. Step 3: Cross multiply
    15,147.39x = 22,719.45 × 5,286.86
  4. Step 4: Simplify right side
    15,147.39x = 120,114,437.83
  5. Step 5: Solve for x
    x = 120,114,437.83/15,147.39
  6. Step 6: Final answer
    x = 7,929.71

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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.