Home / 39,203.20-58,766.40-20,492.80

Finding the Fourth Proportional to 39,203.20, 58,766.40 and 20,492.80

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Solution

The fourth proportional to 39,203.20, 58,766.40 and 20,492.80 is: 30,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,203.20 : 58,766.40 = 20,492.80 : x
  2. Step 2: Convert to fraction form
    39,203.20/58,766.40 = 20,492.80/x
  3. Step 3: Cross multiply
    39,203.20x = 58,766.40 × 20,492.80
  4. Step 4: Simplify right side
    39,203.20x = 1,204,288,081.92
  5. Step 5: Solve for x
    x = 1,204,288,081.92/39,203.20
  6. Step 6: Final answer
    x = 30,719.13

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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.