Home / 10,421.60-15,622.92-3,843.20

Finding the Fourth Proportional to 10,421.60, 15,622.92 and 3,843.20

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Solution

The fourth proportional to 10,421.60, 15,622.92 and 3,843.20 is: 5,761.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.60 : 15,622.92 = 3,843.20 : x
  2. Step 2: Convert to fraction form
    10,421.60/15,622.92 = 3,843.20/x
  3. Step 3: Cross multiply
    10,421.60x = 15,622.92 × 3,843.20
  4. Step 4: Simplify right side
    10,421.60x = 60,042,006.14
  5. Step 5: Solve for x
    x = 60,042,006.14/10,421.60
  6. Step 6: Final answer
    x = 5,761.30

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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.