Home / 30,120.48-41,580.72-21,175.65

Finding the Fourth Proportional to 30,120.48, 41,580.72 and 21,175.65

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Solution

The fourth proportional to 30,120.48, 41,580.72 and 21,175.65 is: 29,232.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.48 : 41,580.72 = 21,175.65 : x
  2. Step 2: Convert to fraction form
    30,120.48/41,580.72 = 21,175.65/x
  3. Step 3: Cross multiply
    30,120.48x = 41,580.72 × 21,175.65
  4. Step 4: Simplify right side
    30,120.48x = 880,498,773.47
  5. Step 5: Solve for x
    x = 880,498,773.47/30,120.48
  6. Step 6: Final answer
    x = 29,232.56

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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.