Home / 15,923.20-23,859.20-13,721.60

Finding the Fourth Proportional to 15,923.20, 23,859.20 and 13,721.60

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Solution

The fourth proportional to 15,923.20, 23,859.20 and 13,721.60 is: 20,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,923.20 : 23,859.20 = 13,721.60 : x
  2. Step 2: Convert to fraction form
    15,923.20/23,859.20 = 13,721.60/x
  3. Step 3: Cross multiply
    15,923.20x = 23,859.20 × 13,721.60
  4. Step 4: Simplify right side
    15,923.20x = 327,386,398.72
  5. Step 5: Solve for x
    x = 327,386,398.72/15,923.20
  6. Step 6: Final answer
    x = 20,560.34

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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.