Home / 10,972.80-15,122.88-8,579.52

Finding the Fourth Proportional to 10,972.80, 15,122.88 and 8,579.52

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Solution

The fourth proportional to 10,972.80, 15,122.88 and 8,579.52 is: 11,824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.80 : 15,122.88 = 8,579.52 : x
  2. Step 2: Convert to fraction form
    10,972.80/15,122.88 = 8,579.52/x
  3. Step 3: Cross multiply
    10,972.80x = 15,122.88 × 8,579.52
  4. Step 4: Simplify right side
    10,972.80x = 129,747,051.42
  5. Step 5: Solve for x
    x = 129,747,051.42/10,972.80
  6. Step 6: Final answer
    x = 11,824.43

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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.