Home / 30,581.18-42,198.63-17,149.65

Finding the Fourth Proportional to 30,581.18, 42,198.63 and 17,149.65

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Solution

The fourth proportional to 30,581.18, 42,198.63 and 17,149.65 is: 23,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.18 : 42,198.63 = 17,149.65 : x
  2. Step 2: Convert to fraction form
    30,581.18/42,198.63 = 17,149.65/x
  3. Step 3: Cross multiply
    30,581.18x = 42,198.63 × 17,149.65
  4. Step 4: Simplify right side
    30,581.18x = 723,691,734.98
  5. Step 5: Solve for x
    x = 723,691,734.98/30,581.18
  6. Step 6: Final answer
    x = 23,664.62

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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.