Home / 13,141.38-18,135.16-7,173.18

Finding the Fourth Proportional to 13,141.38, 18,135.16 and 7,173.18

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Solution

The fourth proportional to 13,141.38, 18,135.16 and 7,173.18 is: 9,899.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.38 : 18,135.16 = 7,173.18 : x
  2. Step 2: Convert to fraction form
    13,141.38/18,135.16 = 7,173.18/x
  3. Step 3: Cross multiply
    13,141.38x = 18,135.16 × 7,173.18
  4. Step 4: Simplify right side
    13,141.38x = 130,086,767.01
  5. Step 5: Solve for x
    x = 130,086,767.01/13,141.38
  6. Step 6: Final answer
    x = 9,899.02

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Half scale
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Double scale
Find fourth proportional to 13,142.38, 18,136.54 and 7,174.18
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.