Home / 30,879.16-42,613.58-18,132.50

Finding the Fourth Proportional to 30,879.16, 42,613.58 and 18,132.50

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Solution

The fourth proportional to 30,879.16, 42,613.58 and 18,132.50 is: 25,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.16 : 42,613.58 = 18,132.50 : x
  2. Step 2: Convert to fraction form
    30,879.16/42,613.58 = 18,132.50/x
  3. Step 3: Cross multiply
    30,879.16x = 42,613.58 × 18,132.50
  4. Step 4: Simplify right side
    30,879.16x = 772,690,489.59
  5. Step 5: Solve for x
    x = 772,690,489.59/30,879.16
  6. Step 6: Final answer
    x = 25,023.04

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