Home / 22,717.28-31,358.40-13,288.88

Finding the Fourth Proportional to 22,717.28, 31,358.40 and 13,288.88

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Solution

The fourth proportional to 22,717.28, 31,358.40 and 13,288.88 is: 18,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,717.28 : 31,358.40 = 13,288.88 : x
  2. Step 2: Convert to fraction form
    22,717.28/31,358.40 = 13,288.88/x
  3. Step 3: Cross multiply
    22,717.28x = 31,358.40 × 13,288.88
  4. Step 4: Simplify right side
    22,717.28x = 416,718,014.59
  5. Step 5: Solve for x
    x = 416,718,014.59/22,717.28
  6. Step 6: Final answer
    x = 18,343.66

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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.