Home / 11,062.40-16,579.20-7,980.80

Finding the Fourth Proportional to 11,062.40, 16,579.20 and 7,980.80

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Solution

The fourth proportional to 11,062.40, 16,579.20 and 7,980.80 is: 11,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,062.40 : 16,579.20 = 7,980.80 : x
  2. Step 2: Convert to fraction form
    11,062.40/16,579.20 = 7,980.80/x
  3. Step 3: Cross multiply
    11,062.40x = 16,579.20 × 7,980.80
  4. Step 4: Simplify right side
    11,062.40x = 132,315,279.36
  5. Step 5: Solve for x
    x = 132,315,279.36/11,062.40
  6. Step 6: Final answer
    x = 11,960.81

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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.