Home / 10,095.78-15,145.40-3,431.58

Finding the Fourth Proportional to 10,095.78, 15,145.40 and 3,431.58

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Solution

The fourth proportional to 10,095.78, 15,145.40 and 3,431.58 is: 5,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,095.78 : 15,145.40 = 3,431.58 : x
  2. Step 2: Convert to fraction form
    10,095.78/15,145.40 = 3,431.58/x
  3. Step 3: Cross multiply
    10,095.78x = 15,145.40 × 3,431.58
  4. Step 4: Simplify right side
    10,095.78x = 51,972,651.73
  5. Step 5: Solve for x
    x = 51,972,651.73/10,095.78
  6. Step 6: Final answer
    x = 5,147.96

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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.