Home / 43,509.11-65,231.74-13,909.91

Finding the Fourth Proportional to 43,509.11, 65,231.74 and 13,909.91

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Solution

The fourth proportional to 43,509.11, 65,231.74 and 13,909.91 is: 20,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,509.11 : 65,231.74 = 13,909.91 : x
  2. Step 2: Convert to fraction form
    43,509.11/65,231.74 = 13,909.91/x
  3. Step 3: Cross multiply
    43,509.11x = 65,231.74 × 13,909.91
  4. Step 4: Simplify right side
    43,509.11x = 907,367,236.84
  5. Step 5: Solve for x
    x = 907,367,236.84/43,509.11
  6. Step 6: Final answer
    x = 20,854.65

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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.