Home / 43,338.75-65,015.55-18,390.75

Finding the Fourth Proportional to 43,338.75, 65,015.55 and 18,390.75

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Solution

The fourth proportional to 43,338.75, 65,015.55 and 18,390.75 is: 27,589.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,338.75 : 65,015.55 = 18,390.75 : x
  2. Step 2: Convert to fraction form
    43,338.75/65,015.55 = 18,390.75/x
  3. Step 3: Cross multiply
    43,338.75x = 65,015.55 × 18,390.75
  4. Step 4: Simplify right side
    43,338.75x = 1,195,684,726.16
  5. Step 5: Solve for x
    x = 1,195,684,726.16/43,338.75
  6. Step 6: Final answer
    x = 27,589.28

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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.