Home / 40,389.30-60,586.96-12,311.78

Finding the Fourth Proportional to 40,389.30, 60,586.96 and 12,311.78

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Solution

The fourth proportional to 40,389.30, 60,586.96 and 12,311.78 is: 18,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,389.30 : 60,586.96 = 12,311.78 : x
  2. Step 2: Convert to fraction form
    40,389.30/60,586.96 = 12,311.78/x
  3. Step 3: Cross multiply
    40,389.30x = 60,586.96 × 12,311.78
  4. Step 4: Simplify right side
    40,389.30x = 745,933,322.39
  5. Step 5: Solve for x
    x = 745,933,322.39/40,389.30
  6. Step 6: Final answer
    x = 18,468.59

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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.