Home / 10,380.40-15,570.60-3,454.90

Finding the Fourth Proportional to 10,380.40, 15,570.60 and 3,454.90

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Solution

The fourth proportional to 10,380.40, 15,570.60 and 3,454.90 is: 5,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.40 : 15,570.60 = 3,454.90 : x
  2. Step 2: Convert to fraction form
    10,380.40/15,570.60 = 3,454.90/x
  3. Step 3: Cross multiply
    10,380.40x = 15,570.60 × 3,454.90
  4. Step 4: Simplify right side
    10,380.40x = 53,794,865.94
  5. Step 5: Solve for x
    x = 53,794,865.94/10,380.40
  6. Step 6: Final answer
    x = 5,182.35

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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.