Home / 23,391.78-32,280.25-12,781.18

Finding the Fourth Proportional to 23,391.78, 32,280.25 and 12,781.18

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Solution

The fourth proportional to 23,391.78, 32,280.25 and 12,781.18 is: 17,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,391.78 : 32,280.25 = 12,781.18 : x
  2. Step 2: Convert to fraction form
    23,391.78/32,280.25 = 12,781.18/x
  3. Step 3: Cross multiply
    23,391.78x = 32,280.25 × 12,781.18
  4. Step 4: Simplify right side
    23,391.78x = 412,579,685.70
  5. Step 5: Solve for x
    x = 412,579,685.70/23,391.78
  6. Step 6: Final answer
    x = 17,637.81

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Half scale
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Double scale
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Similar ratio
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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.