Home / 10,115.76-15,150.40-9,765.54

Finding the Fourth Proportional to 10,115.76, 15,150.40 and 9,765.54

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Solution

The fourth proportional to 10,115.76, 15,150.40 and 9,765.54 is: 14,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.76 : 15,150.40 = 9,765.54 : x
  2. Step 2: Convert to fraction form
    10,115.76/15,150.40 = 9,765.54/x
  3. Step 3: Cross multiply
    10,115.76x = 15,150.40 × 9,765.54
  4. Step 4: Simplify right side
    10,115.76x = 147,951,837.22
  5. Step 5: Solve for x
    x = 147,951,837.22/10,115.76
  6. Step 6: Final answer
    x = 14,625.87

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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.