Home / 30,155.93-41,614.19-18,217.18

Finding the Fourth Proportional to 30,155.93, 41,614.19 and 18,217.18

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Solution

The fourth proportional to 30,155.93, 41,614.19 and 18,217.18 is: 25,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.93 : 41,614.19 = 18,217.18 : x
  2. Step 2: Convert to fraction form
    30,155.93/41,614.19 = 18,217.18/x
  3. Step 3: Cross multiply
    30,155.93x = 41,614.19 × 18,217.18
  4. Step 4: Simplify right side
    30,155.93x = 758,093,189.78
  5. Step 5: Solve for x
    x = 758,093,189.78/30,155.93
  6. Step 6: Final answer
    x = 25,139.11

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Half scale
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Double scale
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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.