Home / 23,391.70-32,280.49-12,781.40

Finding the Fourth Proportional to 23,391.70, 32,280.49 and 12,781.40

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Solution

The fourth proportional to 23,391.70, 32,280.49 and 12,781.40 is: 17,638.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,391.70 : 32,280.49 = 12,781.40 : x
  2. Step 2: Convert to fraction form
    23,391.70/32,280.49 = 12,781.40/x
  3. Step 3: Cross multiply
    23,391.70x = 32,280.49 × 12,781.40
  4. Step 4: Simplify right side
    23,391.70x = 412,589,790.98
  5. Step 5: Solve for x
    x = 412,589,790.98/23,391.70
  6. Step 6: Final answer
    x = 17,638.30

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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.