Home / 38,320.20-57,383.10-28,405.80

Finding the Fourth Proportional to 38,320.20, 57,383.10 and 28,405.80

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Solution

The fourth proportional to 38,320.20, 57,383.10 and 28,405.80 is: 42,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,320.20 : 57,383.10 = 28,405.80 : x
  2. Step 2: Convert to fraction form
    38,320.20/57,383.10 = 28,405.80/x
  3. Step 3: Cross multiply
    38,320.20x = 57,383.10 × 28,405.80
  4. Step 4: Simplify right side
    38,320.20x = 1,630,012,861.98
  5. Step 5: Solve for x
    x = 1,630,012,861.98/38,320.20
  6. Step 6: Final answer
    x = 42,536.65

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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.