Home / 15,660.56-21,611.52-8,586.80

Finding the Fourth Proportional to 15,660.56, 21,611.52 and 8,586.80

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Solution

The fourth proportional to 15,660.56, 21,611.52 and 8,586.80 is: 11,849.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.56 : 21,611.52 = 8,586.80 : x
  2. Step 2: Convert to fraction form
    15,660.56/21,611.52 = 8,586.80/x
  3. Step 3: Cross multiply
    15,660.56x = 21,611.52 × 8,586.80
  4. Step 4: Simplify right side
    15,660.56x = 185,573,799.94
  5. Step 5: Solve for x
    x = 185,573,799.94/15,660.56
  6. Step 6: Final answer
    x = 11,849.76

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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.