Home / 15,660.09-21,611.21-8,586.43

Finding the Fourth Proportional to 15,660.09, 21,611.21 and 8,586.43

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Solution

The fourth proportional to 15,660.09, 21,611.21 and 8,586.43 is: 11,849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.09 : 21,611.21 = 8,586.43 : x
  2. Step 2: Convert to fraction form
    15,660.09/21,611.21 = 8,586.43/x
  3. Step 3: Cross multiply
    15,660.09x = 21,611.21 × 8,586.43
  4. Step 4: Simplify right side
    15,660.09x = 185,563,044.92
  5. Step 5: Solve for x
    x = 185,563,044.92/15,660.09
  6. Step 6: Final answer
    x = 11,849.42

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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.