Home / 12,239.29-16,890.69-6,650.29

Finding the Fourth Proportional to 12,239.29, 16,890.69 and 6,650.29

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Solution

The fourth proportional to 12,239.29, 16,890.69 and 6,650.29 is: 9,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.29 : 16,890.69 = 6,650.29 : x
  2. Step 2: Convert to fraction form
    12,239.29/16,890.69 = 6,650.29/x
  3. Step 3: Cross multiply
    12,239.29x = 16,890.69 × 6,650.29
  4. Step 4: Simplify right side
    12,239.29x = 112,327,986.80
  5. Step 5: Solve for x
    x = 112,327,986.80/12,239.29
  6. Step 6: Final answer
    x = 9,177.66

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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.