Home / 13,749.38-18,974.14-7,461.75

Finding the Fourth Proportional to 13,749.38, 18,974.14 and 7,461.75

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Solution

The fourth proportional to 13,749.38, 18,974.14 and 7,461.75 is: 10,297.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.38 : 18,974.14 = 7,461.75 : x
  2. Step 2: Convert to fraction form
    13,749.38/18,974.14 = 7,461.75/x
  3. Step 3: Cross multiply
    13,749.38x = 18,974.14 × 7,461.75
  4. Step 4: Simplify right side
    13,749.38x = 141,580,289.15
  5. Step 5: Solve for x
    x = 141,580,289.15/13,749.38
  6. Step 6: Final answer
    x = 10,297.21

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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.