Home / 20,344.26-28,074.69-13,257.30

Finding the Fourth Proportional to 20,344.26, 28,074.69 and 13,257.30

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Solution

The fourth proportional to 20,344.26, 28,074.69 and 13,257.30 is: 18,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.26 : 28,074.69 = 13,257.30 : x
  2. Step 2: Convert to fraction form
    20,344.26/28,074.69 = 13,257.30/x
  3. Step 3: Cross multiply
    20,344.26x = 28,074.69 × 13,257.30
  4. Step 4: Simplify right side
    20,344.26x = 372,194,587.74
  5. Step 5: Solve for x
    x = 372,194,587.74/20,344.26
  6. Step 6: Final answer
    x = 18,294.82

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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.