Home / 12,222.85-16,866.51-7,187.29

Finding the Fourth Proportional to 12,222.85, 16,866.51 and 7,187.29

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Solution

The fourth proportional to 12,222.85, 16,866.51 and 7,187.29 is: 9,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.85 : 16,866.51 = 7,187.29 : x
  2. Step 2: Convert to fraction form
    12,222.85/16,866.51 = 7,187.29/x
  3. Step 3: Cross multiply
    12,222.85x = 16,866.51 × 7,187.29
  4. Step 4: Simplify right side
    12,222.85x = 121,224,414.33
  5. Step 5: Solve for x
    x = 121,224,414.33/12,222.85
  6. Step 6: Final answer
    x = 9,917.86

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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.