Home / 40,380.90-60,579.45-12,302.70

Finding the Fourth Proportional to 40,380.90, 60,579.45 and 12,302.70

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Solution

The fourth proportional to 40,380.90, 60,579.45 and 12,302.70 is: 18,456.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,380.90 : 60,579.45 = 12,302.70 : x
  2. Step 2: Convert to fraction form
    40,380.90/60,579.45 = 12,302.70/x
  3. Step 3: Cross multiply
    40,380.90x = 60,579.45 × 12,302.70
  4. Step 4: Simplify right side
    40,380.90x = 745,290,799.52
  5. Step 5: Solve for x
    x = 745,290,799.52/40,380.90
  6. Step 6: Final answer
    x = 18,456.52

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1.5x scale

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.