Home / 10,145.89-15,219.70-2,650.44

Finding the Fourth Proportional to 10,145.89, 15,219.70 and 2,650.44

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Solution

The fourth proportional to 10,145.89, 15,219.70 and 2,650.44 is: 3,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.89 : 15,219.70 = 2,650.44 : x
  2. Step 2: Convert to fraction form
    10,145.89/15,219.70 = 2,650.44/x
  3. Step 3: Cross multiply
    10,145.89x = 15,219.70 × 2,650.44
  4. Step 4: Simplify right side
    10,145.89x = 40,338,952.12
  5. Step 5: Solve for x
    x = 40,338,952.12/10,145.89
  6. Step 6: Final answer
    x = 3,975.89

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Double scale
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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.