Home / 12,505.79-18,758.69-3,740.42

Finding the Fourth Proportional to 12,505.79, 18,758.69 and 3,740.42

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Solution

The fourth proportional to 12,505.79, 18,758.69 and 3,740.42 is: 5,610.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.79 : 18,758.69 = 3,740.42 : x
  2. Step 2: Convert to fraction form
    12,505.79/18,758.69 = 3,740.42/x
  3. Step 3: Cross multiply
    12,505.79x = 18,758.69 × 3,740.42
  4. Step 4: Simplify right side
    12,505.79x = 70,165,379.25
  5. Step 5: Solve for x
    x = 70,165,379.25/12,505.79
  6. Step 6: Final answer
    x = 5,610.63

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.