Home / 11,439.20-17,158.80-4,865.60

Finding the Fourth Proportional to 11,439.20, 17,158.80 and 4,865.60

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Solution

The fourth proportional to 11,439.20, 17,158.80 and 4,865.60 is: 7,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.20 : 17,158.80 = 4,865.60 : x
  2. Step 2: Convert to fraction form
    11,439.20/17,158.80 = 4,865.60/x
  3. Step 3: Cross multiply
    11,439.20x = 17,158.80 × 4,865.60
  4. Step 4: Simplify right side
    11,439.20x = 83,487,857.28
  5. Step 5: Solve for x
    x = 83,487,857.28/11,439.20
  6. Step 6: Final answer
    x = 7,298.40

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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.