Home / 10,489.68-15,734.72-3,914.55

Finding the Fourth Proportional to 10,489.68, 15,734.72 and 3,914.55

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Solution

The fourth proportional to 10,489.68, 15,734.72 and 3,914.55 is: 5,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.68 : 15,734.72 = 3,914.55 : x
  2. Step 2: Convert to fraction form
    10,489.68/15,734.72 = 3,914.55/x
  3. Step 3: Cross multiply
    10,489.68x = 15,734.72 × 3,914.55
  4. Step 4: Simplify right side
    10,489.68x = 61,594,357.96
  5. Step 5: Solve for x
    x = 61,594,357.96/10,489.68
  6. Step 6: Final answer
    x = 5,871.90

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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.