Home / 28,479.88-42,719.82-18,157.24

Finding the Fourth Proportional to 28,479.88, 42,719.82 and 18,157.24

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Solution

The fourth proportional to 28,479.88, 42,719.82 and 18,157.24 is: 27,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.88 : 42,719.82 = 18,157.24 : x
  2. Step 2: Convert to fraction form
    28,479.88/42,719.82 = 18,157.24/x
  3. Step 3: Cross multiply
    28,479.88x = 42,719.82 × 18,157.24
  4. Step 4: Simplify right side
    28,479.88x = 775,674,024.50
  5. Step 5: Solve for x
    x = 775,674,024.50/28,479.88
  6. Step 6: Final answer
    x = 27,235.86

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Similar ratio
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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.