Home / 13,170.57-18,175.89-7,506.19

Finding the Fourth Proportional to 13,170.57, 18,175.89 and 7,506.19

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Solution

The fourth proportional to 13,170.57, 18,175.89 and 7,506.19 is: 10,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.57 : 18,175.89 = 7,506.19 : x
  2. Step 2: Convert to fraction form
    13,170.57/18,175.89 = 7,506.19/x
  3. Step 3: Cross multiply
    13,170.57x = 18,175.89 × 7,506.19
  4. Step 4: Simplify right side
    13,170.57x = 136,431,785.75
  5. Step 5: Solve for x
    x = 136,431,785.75/13,170.57
  6. Step 6: Final answer
    x = 10,358.83

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Half scale
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Double scale
Find fourth proportional to 13,171.57, 18,177.27 and 7,507.19
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.