Home / 30,151.23-41,617.26-18,215.34

Finding the Fourth Proportional to 30,151.23, 41,617.26 and 18,215.34

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Solution

The fourth proportional to 30,151.23, 41,617.26 and 18,215.34 is: 25,142.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.23 : 41,617.26 = 18,215.34 : x
  2. Step 2: Convert to fraction form
    30,151.23/41,617.26 = 18,215.34/x
  3. Step 3: Cross multiply
    30,151.23x = 41,617.26 × 18,215.34
  4. Step 4: Simplify right side
    30,151.23x = 758,072,540.77
  5. Step 5: Solve for x
    x = 758,072,540.77/30,151.23
  6. Step 6: Final answer
    x = 25,142.34

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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.