Home / 19,766.85-27,285.20-12,218.97

Finding the Fourth Proportional to 19,766.85, 27,285.20 and 12,218.97

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Solution

The fourth proportional to 19,766.85, 27,285.20 and 12,218.97 is: 16,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.85 : 27,285.20 = 12,218.97 : x
  2. Step 2: Convert to fraction form
    19,766.85/27,285.20 = 12,218.97/x
  3. Step 3: Cross multiply
    19,766.85x = 27,285.20 × 12,218.97
  4. Step 4: Simplify right side
    19,766.85x = 333,397,040.24
  5. Step 5: Solve for x
    x = 333,397,040.24/19,766.85
  6. Step 6: Final answer
    x = 16,866.47

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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.