Home / 10,245.18-15,351.30-5,865.78

Finding the Fourth Proportional to 10,245.18, 15,351.30 and 5,865.78

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Solution

The fourth proportional to 10,245.18, 15,351.30 and 5,865.78 is: 8,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.18 : 15,351.30 = 5,865.78 : x
  2. Step 2: Convert to fraction form
    10,245.18/15,351.30 = 5,865.78/x
  3. Step 3: Cross multiply
    10,245.18x = 15,351.30 × 5,865.78
  4. Step 4: Simplify right side
    10,245.18x = 90,047,348.51
  5. Step 5: Solve for x
    x = 90,047,348.51/10,245.18
  6. Step 6: Final answer
    x = 8,789.24

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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.