Home / 22,679.22-31,287.24-15,118.20

Finding the Fourth Proportional to 22,679.22, 31,287.24 and 15,118.20

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Solution

The fourth proportional to 22,679.22, 31,287.24 and 15,118.20 is: 20,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,679.22 : 31,287.24 = 15,118.20 : x
  2. Step 2: Convert to fraction form
    22,679.22/31,287.24 = 15,118.20/x
  3. Step 3: Cross multiply
    22,679.22x = 31,287.24 × 15,118.20
  4. Step 4: Simplify right side
    22,679.22x = 473,006,751.77
  5. Step 5: Solve for x
    x = 473,006,751.77/22,679.22
  6. Step 6: Final answer
    x = 20,856.39

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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.