Home / 20,617.39-28,475.18-13,891.24

Finding the Fourth Proportional to 20,617.39, 28,475.18 and 13,891.24

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Solution

The fourth proportional to 20,617.39, 28,475.18 and 13,891.24 is: 19,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.39 : 28,475.18 = 13,891.24 : x
  2. Step 2: Convert to fraction form
    20,617.39/28,475.18 = 13,891.24/x
  3. Step 3: Cross multiply
    20,617.39x = 28,475.18 × 13,891.24
  4. Step 4: Simplify right side
    20,617.39x = 395,555,559.42
  5. Step 5: Solve for x
    x = 395,555,559.42/20,617.39
  6. Step 6: Final answer
    x = 19,185.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.