Home / 13,167.19-18,169.82-7,501.75

Finding the Fourth Proportional to 13,167.19, 18,169.82 and 7,501.75

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Solution

The fourth proportional to 13,167.19, 18,169.82 and 7,501.75 is: 10,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.19 : 18,169.82 = 7,501.75 : x
  2. Step 2: Convert to fraction form
    13,167.19/18,169.82 = 7,501.75/x
  3. Step 3: Cross multiply
    13,167.19x = 18,169.82 × 7,501.75
  4. Step 4: Simplify right side
    13,167.19x = 136,305,392.38
  5. Step 5: Solve for x
    x = 136,305,392.38/13,167.19
  6. Step 6: Final answer
    x = 10,351.90

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Half scale
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Double scale
Find fourth proportional to 13,168.19, 18,171.20 and 7,502.75
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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.