Home / 30,618.09-42,255.41-17,190.23

Finding the Fourth Proportional to 30,618.09, 42,255.41 and 17,190.23

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Solution

The fourth proportional to 30,618.09, 42,255.41 and 17,190.23 is: 23,723.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.09 : 42,255.41 = 17,190.23 : x
  2. Step 2: Convert to fraction form
    30,618.09/42,255.41 = 17,190.23/x
  3. Step 3: Cross multiply
    30,618.09x = 42,255.41 × 17,190.23
  4. Step 4: Simplify right side
    30,618.09x = 726,379,919.42
  5. Step 5: Solve for x
    x = 726,379,919.42/30,618.09
  6. Step 6: Final answer
    x = 23,723.88

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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.