Home / 30,568.66-42,186.48-17,144.21

Finding the Fourth Proportional to 30,568.66, 42,186.48 and 17,144.21

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Solution

The fourth proportional to 30,568.66, 42,186.48 and 17,144.21 is: 23,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,568.66 : 42,186.48 = 17,144.21 : x
  2. Step 2: Convert to fraction form
    30,568.66/42,186.48 = 17,144.21/x
  3. Step 3: Cross multiply
    30,568.66x = 42,186.48 × 17,144.21
  4. Step 4: Simplify right side
    30,568.66x = 723,253,872.28
  5. Step 5: Solve for x
    x = 723,253,872.28/30,568.66
  6. Step 6: Final answer
    x = 23,659.98

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Double scale
Find fourth proportional to 30,569.66, 42,187.86 and 17,145.21
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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.