Home / 13,141.23-18,134.13-7,475.19

Finding the Fourth Proportional to 13,141.23, 18,134.13 and 7,475.19

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Solution

The fourth proportional to 13,141.23, 18,134.13 and 7,475.19 is: 10,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.23 : 18,134.13 = 7,475.19 : x
  2. Step 2: Convert to fraction form
    13,141.23/18,134.13 = 7,475.19/x
  3. Step 3: Cross multiply
    13,141.23x = 18,134.13 × 7,475.19
  4. Step 4: Simplify right side
    13,141.23x = 135,556,067.23
  5. Step 5: Solve for x
    x = 135,556,067.23/13,141.23
  6. Step 6: Final answer
    x = 10,315.33

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Half scale
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Double scale
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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.