Home / 13,144.11-18,139.22-7,176.33

Finding the Fourth Proportional to 13,144.11, 18,139.22 and 7,176.33

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Solution

The fourth proportional to 13,144.11, 18,139.22 and 7,176.33 is: 9,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.11 : 18,139.22 = 7,176.33 : x
  2. Step 2: Convert to fraction form
    13,144.11/18,139.22 = 7,176.33/x
  3. Step 3: Cross multiply
    13,144.11x = 18,139.22 × 7,176.33
  4. Step 4: Simplify right side
    13,144.11x = 130,172,992.78
  5. Step 5: Solve for x
    x = 130,172,992.78/13,144.11
  6. Step 6: Final answer
    x = 9,903.52

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Half scale
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Double scale
Find fourth proportional to 13,145.11, 18,140.60 and 7,177.33
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.