Home / 21,515.44-32,282.61-8,368.78

Finding the Fourth Proportional to 21,515.44, 32,282.61 and 8,368.78

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Solution

The fourth proportional to 21,515.44, 32,282.61 and 8,368.78 is: 12,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.44 : 32,282.61 = 8,368.78 : x
  2. Step 2: Convert to fraction form
    21,515.44/32,282.61 = 8,368.78/x
  3. Step 3: Cross multiply
    21,515.44x = 32,282.61 × 8,368.78
  4. Step 4: Simplify right side
    21,515.44x = 270,166,060.92
  5. Step 5: Solve for x
    x = 270,166,060.92/21,515.44
  6. Step 6: Final answer
    x = 12,556.85

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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.