Home / 12,239.42-16,763.86-11,521.31

Finding the Fourth Proportional to 12,239.42, 16,763.86 and 11,521.31

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Solution

The fourth proportional to 12,239.42, 16,763.86 and 11,521.31 is: 15,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.42 : 16,763.86 = 11,521.31 : x
  2. Step 2: Convert to fraction form
    12,239.42/16,763.86 = 11,521.31/x
  3. Step 3: Cross multiply
    12,239.42x = 16,763.86 × 11,521.31
  4. Step 4: Simplify right side
    12,239.42x = 193,141,558.44
  5. Step 5: Solve for x
    x = 193,141,558.44/12,239.42
  6. Step 6: Final answer
    x = 15,780.29

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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.