Home / 10,645.20-15,957.96-5,439.60

Finding the Fourth Proportional to 10,645.20, 15,957.96 and 5,439.60

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Solution

The fourth proportional to 10,645.20, 15,957.96 and 5,439.60 is: 8,154.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,645.20 : 15,957.96 = 5,439.60 : x
  2. Step 2: Convert to fraction form
    10,645.20/15,957.96 = 5,439.60/x
  3. Step 3: Cross multiply
    10,645.20x = 15,957.96 × 5,439.60
  4. Step 4: Simplify right side
    10,645.20x = 86,804,919.22
  5. Step 5: Solve for x
    x = 86,804,919.22/10,645.20
  6. Step 6: Final answer
    x = 8,154.37

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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.