Home / 15,119.20-22,660.56-7,721.44

Finding the Fourth Proportional to 15,119.20, 22,660.56 and 7,721.44

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Solution

The fourth proportional to 15,119.20, 22,660.56 and 7,721.44 is: 11,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.20 : 22,660.56 = 7,721.44 : x
  2. Step 2: Convert to fraction form
    15,119.20/22,660.56 = 7,721.44/x
  3. Step 3: Cross multiply
    15,119.20x = 22,660.56 × 7,721.44
  4. Step 4: Simplify right side
    15,119.20x = 174,972,154.41
  5. Step 5: Solve for x
    x = 174,972,154.41/15,119.20
  6. Step 6: Final answer
    x = 11,572.84

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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.