Home / 20,799.60-31,191.10-12,040.68

Finding the Fourth Proportional to 20,799.60, 31,191.10 and 12,040.68

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Solution

The fourth proportional to 20,799.60, 31,191.10 and 12,040.68 is: 18,056.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.60 : 31,191.10 = 12,040.68 : x
  2. Step 2: Convert to fraction form
    20,799.60/31,191.10 = 12,040.68/x
  3. Step 3: Cross multiply
    20,799.60x = 31,191.10 × 12,040.68
  4. Step 4: Simplify right side
    20,799.60x = 375,562,053.95
  5. Step 5: Solve for x
    x = 375,562,053.95/20,799.60
  6. Step 6: Final answer
    x = 18,056.22

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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.