Home / 22,812.88-31,470.24-15,743.20

Finding the Fourth Proportional to 22,812.88, 31,470.24 and 15,743.20

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Solution

The fourth proportional to 22,812.88, 31,470.24 and 15,743.20 is: 21,717.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,812.88 : 31,470.24 = 15,743.20 : x
  2. Step 2: Convert to fraction form
    22,812.88/31,470.24 = 15,743.20/x
  3. Step 3: Cross multiply
    22,812.88x = 31,470.24 × 15,743.20
  4. Step 4: Simplify right side
    22,812.88x = 495,442,282.37
  5. Step 5: Solve for x
    x = 495,442,282.37/22,812.88
  6. Step 6: Final answer
    x = 21,717.66

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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.