Home / 12,239.68-16,764.20-11,521.57

Finding the Fourth Proportional to 12,239.68, 16,764.20 and 11,521.57

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Solution

The fourth proportional to 12,239.68, 16,764.20 and 11,521.57 is: 15,780.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.68 : 16,764.20 = 11,521.57 : x
  2. Step 2: Convert to fraction form
    12,239.68/16,764.20 = 11,521.57/x
  3. Step 3: Cross multiply
    12,239.68x = 16,764.20 × 11,521.57
  4. Step 4: Simplify right side
    12,239.68x = 193,149,903.79
  5. Step 5: Solve for x
    x = 193,149,903.79/12,239.68
  6. Step 6: Final answer
    x = 15,780.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.