Home / 43,387.20-65,085.12-11,797.68

Finding the Fourth Proportional to 43,387.20, 65,085.12 and 11,797.68

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Solution

The fourth proportional to 43,387.20, 65,085.12 and 11,797.68 is: 17,697.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,387.20 : 65,085.12 = 11,797.68 : x
  2. Step 2: Convert to fraction form
    43,387.20/65,085.12 = 11,797.68/x
  3. Step 3: Cross multiply
    43,387.20x = 65,085.12 × 11,797.68
  4. Step 4: Simplify right side
    43,387.20x = 767,853,418.52
  5. Step 5: Solve for x
    x = 767,853,418.52/43,387.20
  6. Step 6: Final answer
    x = 17,697.69

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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.