Home / 21,986.40-32,979.60-7,195.80

Finding the Fourth Proportional to 21,986.40, 32,979.60 and 7,195.80

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Solution

The fourth proportional to 21,986.40, 32,979.60 and 7,195.80 is: 10,793.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.40 : 32,979.60 = 7,195.80 : x
  2. Step 2: Convert to fraction form
    21,986.40/32,979.60 = 7,195.80/x
  3. Step 3: Cross multiply
    21,986.40x = 32,979.60 × 7,195.80
  4. Step 4: Simplify right side
    21,986.40x = 237,314,605.68
  5. Step 5: Solve for x
    x = 237,314,605.68/21,986.40
  6. Step 6: Final answer
    x = 10,793.70

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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.