Home / 22,081.28-30,469.76-12,143.36

Finding the Fourth Proportional to 22,081.28, 30,469.76 and 12,143.36

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Solution

The fourth proportional to 22,081.28, 30,469.76 and 12,143.36 is: 16,756.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,081.28 : 30,469.76 = 12,143.36 : x
  2. Step 2: Convert to fraction form
    22,081.28/30,469.76 = 12,143.36/x
  3. Step 3: Cross multiply
    22,081.28x = 30,469.76 × 12,143.36
  4. Step 4: Simplify right side
    22,081.28x = 370,005,264.79
  5. Step 5: Solve for x
    x = 370,005,264.79/22,081.28
  6. Step 6: Final answer
    x = 16,756.51

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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.