Home / 15,156.68-22,738.12-6,391.60

Finding the Fourth Proportional to 15,156.68, 22,738.12 and 6,391.60

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Solution

The fourth proportional to 15,156.68, 22,738.12 and 6,391.60 is: 9,588.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.68 : 22,738.12 = 6,391.60 : x
  2. Step 2: Convert to fraction form
    15,156.68/22,738.12 = 6,391.60/x
  3. Step 3: Cross multiply
    15,156.68x = 22,738.12 × 6,391.60
  4. Step 4: Simplify right side
    15,156.68x = 145,332,967.79
  5. Step 5: Solve for x
    x = 145,332,967.79/15,156.68
  6. Step 6: Final answer
    x = 9,588.71

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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.