Home / 43,480.68-65,221.62-12,315.90

Finding the Fourth Proportional to 43,480.68, 65,221.62 and 12,315.90

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Solution

The fourth proportional to 43,480.68, 65,221.62 and 12,315.90 is: 18,474.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,480.68 : 65,221.62 = 12,315.90 : x
  2. Step 2: Convert to fraction form
    43,480.68/65,221.62 = 12,315.90/x
  3. Step 3: Cross multiply
    43,480.68x = 65,221.62 × 12,315.90
  4. Step 4: Simplify right side
    43,480.68x = 803,262,949.76
  5. Step 5: Solve for x
    x = 803,262,949.76/43,480.68
  6. Step 6: Final answer
    x = 18,474.02

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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.