Home / 22,720.22-31,353.68-12,648.50

Finding the Fourth Proportional to 22,720.22, 31,353.68 and 12,648.50

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Solution

The fourth proportional to 22,720.22, 31,353.68 and 12,648.50 is: 17,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.22 : 31,353.68 = 12,648.50 : x
  2. Step 2: Convert to fraction form
    22,720.22/31,353.68 = 12,648.50/x
  3. Step 3: Cross multiply
    22,720.22x = 31,353.68 × 12,648.50
  4. Step 4: Simplify right side
    22,720.22x = 396,577,021.48
  5. Step 5: Solve for x
    x = 396,577,021.48/22,720.22
  6. Step 6: Final answer
    x = 17,454.81

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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.