Home / 20,531.80-30,800.22-8,842.60

Finding the Fourth Proportional to 20,531.80, 30,800.22 and 8,842.60

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Solution

The fourth proportional to 20,531.80, 30,800.22 and 8,842.60 is: 13,264.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.80 : 30,800.22 = 8,842.60 : x
  2. Step 2: Convert to fraction form
    20,531.80/30,800.22 = 8,842.60/x
  3. Step 3: Cross multiply
    20,531.80x = 30,800.22 × 8,842.60
  4. Step 4: Simplify right side
    20,531.80x = 272,354,025.37
  5. Step 5: Solve for x
    x = 272,354,025.37/20,531.80
  6. Step 6: Final answer
    x = 13,264.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.