Home / 28,589.88-42,899.44-13,613.92

Finding the Fourth Proportional to 28,589.88, 42,899.44 and 13,613.92

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Solution

The fourth proportional to 28,589.88, 42,899.44 and 13,613.92 is: 20,427.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,589.88 : 42,899.44 = 13,613.92 : x
  2. Step 2: Convert to fraction form
    28,589.88/42,899.44 = 13,613.92/x
  3. Step 3: Cross multiply
    28,589.88x = 42,899.44 × 13,613.92
  4. Step 4: Simplify right side
    28,589.88x = 584,029,544.20
  5. Step 5: Solve for x
    x = 584,029,544.20/28,589.88
  6. Step 6: Final answer
    x = 20,427.84

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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.