Home / 10,419.30-15,630.31-3,396.85

Finding the Fourth Proportional to 10,419.30, 15,630.31 and 3,396.85

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Solution

The fourth proportional to 10,419.30, 15,630.31 and 3,396.85 is: 5,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.30 : 15,630.31 = 3,396.85 : x
  2. Step 2: Convert to fraction form
    10,419.30/15,630.31 = 3,396.85/x
  3. Step 3: Cross multiply
    10,419.30x = 15,630.31 × 3,396.85
  4. Step 4: Simplify right side
    10,419.30x = 53,093,783.69
  5. Step 5: Solve for x
    x = 53,093,783.69/10,419.30
  6. Step 6: Final answer
    x = 5,095.72

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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.