Home / 28,682.19-39,580.11-15,936.18

Finding the Fourth Proportional to 28,682.19, 39,580.11 and 15,936.18

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Solution

The fourth proportional to 28,682.19, 39,580.11 and 15,936.18 is: 21,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.19 : 39,580.11 = 15,936.18 : x
  2. Step 2: Convert to fraction form
    28,682.19/39,580.11 = 15,936.18/x
  3. Step 3: Cross multiply
    28,682.19x = 39,580.11 × 15,936.18
  4. Step 4: Simplify right side
    28,682.19x = 630,755,757.38
  5. Step 5: Solve for x
    x = 630,755,757.38/28,682.19
  6. Step 6: Final answer
    x = 21,991.20

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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.