Home / 18,312.90-27,469.35-5,165.10

Finding the Fourth Proportional to 18,312.90, 27,469.35 and 5,165.10

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Solution

The fourth proportional to 18,312.90, 27,469.35 and 5,165.10 is: 7,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.90 : 27,469.35 = 5,165.10 : x
  2. Step 2: Convert to fraction form
    18,312.90/27,469.35 = 5,165.10/x
  3. Step 3: Cross multiply
    18,312.90x = 27,469.35 × 5,165.10
  4. Step 4: Simplify right side
    18,312.90x = 141,881,939.69
  5. Step 5: Solve for x
    x = 141,881,939.69/18,312.90
  6. Step 6: Final answer
    x = 7,747.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.