Home / 10,979.60-16,469.40-10,331.60

Finding the Fourth Proportional to 10,979.60, 16,469.40 and 10,331.60

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Solution

The fourth proportional to 10,979.60, 16,469.40 and 10,331.60 is: 15,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.60 : 16,469.40 = 10,331.60 : x
  2. Step 2: Convert to fraction form
    10,979.60/16,469.40 = 10,331.60/x
  3. Step 3: Cross multiply
    10,979.60x = 16,469.40 × 10,331.60
  4. Step 4: Simplify right side
    10,979.60x = 170,155,253.04
  5. Step 5: Solve for x
    x = 170,155,253.04/10,979.60
  6. Step 6: Final answer
    x = 15,497.40

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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.