Home / 30,212.38-41,690.08-18,109.66

Finding the Fourth Proportional to 30,212.38, 41,690.08 and 18,109.66

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Solution

The fourth proportional to 30,212.38, 41,690.08 and 18,109.66 is: 24,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.38 : 41,690.08 = 18,109.66 : x
  2. Step 2: Convert to fraction form
    30,212.38/41,690.08 = 18,109.66/x
  3. Step 3: Cross multiply
    30,212.38x = 41,690.08 × 18,109.66
  4. Step 4: Simplify right side
    30,212.38x = 754,993,174.17
  5. Step 5: Solve for x
    x = 754,993,174.17/30,212.38
  6. Step 6: Final answer
    x = 24,989.53

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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.