Home / 15,934.80-21,990.56-8,765.02

Finding the Fourth Proportional to 15,934.80, 21,990.56 and 8,765.02

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Solution

The fourth proportional to 15,934.80, 21,990.56 and 8,765.02 is: 12,096.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.80 : 21,990.56 = 8,765.02 : x
  2. Step 2: Convert to fraction form
    15,934.80/21,990.56 = 8,765.02/x
  3. Step 3: Cross multiply
    15,934.80x = 21,990.56 × 8,765.02
  4. Step 4: Simplify right side
    15,934.80x = 192,747,544.43
  5. Step 5: Solve for x
    x = 192,747,544.43/15,934.80
  6. Step 6: Final answer
    x = 12,096.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.