Home / 19,818.24-29,708.55-7,329.78

Finding the Fourth Proportional to 19,818.24, 29,708.55 and 7,329.78

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Solution

The fourth proportional to 19,818.24, 29,708.55 and 7,329.78 is: 10,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.24 : 29,708.55 = 7,329.78 : x
  2. Step 2: Convert to fraction form
    19,818.24/29,708.55 = 7,329.78/x
  3. Step 3: Cross multiply
    19,818.24x = 29,708.55 × 7,329.78
  4. Step 4: Simplify right side
    19,818.24x = 217,757,135.62
  5. Step 5: Solve for x
    x = 217,757,135.62/19,818.24
  6. Step 6: Final answer
    x = 10,987.71

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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.