Home / 19,766.49-29,650.20-7,115.61

Finding the Fourth Proportional to 19,766.49, 29,650.20 and 7,115.61

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Solution

The fourth proportional to 19,766.49, 29,650.20 and 7,115.61 is: 10,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.49 : 29,650.20 = 7,115.61 : x
  2. Step 2: Convert to fraction form
    19,766.49/29,650.20 = 7,115.61/x
  3. Step 3: Cross multiply
    19,766.49x = 29,650.20 × 7,115.61
  4. Step 4: Simplify right side
    19,766.49x = 210,979,259.62
  5. Step 5: Solve for x
    x = 210,979,259.62/19,766.49
  6. Step 6: Final answer
    x = 10,673.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.