Home / 28,099.20-42,115.32-13,086.12

Finding the Fourth Proportional to 28,099.20, 42,115.32 and 13,086.12

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Solution

The fourth proportional to 28,099.20, 42,115.32 and 13,086.12 is: 19,613.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.20 : 42,115.32 = 13,086.12 : x
  2. Step 2: Convert to fraction form
    28,099.20/42,115.32 = 13,086.12/x
  3. Step 3: Cross multiply
    28,099.20x = 42,115.32 × 13,086.12
  4. Step 4: Simplify right side
    28,099.20x = 551,126,131.36
  5. Step 5: Solve for x
    x = 551,126,131.36/28,099.20
  6. Step 6: Final answer
    x = 19,613.59

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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.