Home / 19,926.68-29,891.85-5,135.65

Finding the Fourth Proportional to 19,926.68, 29,891.85 and 5,135.65

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Solution

The fourth proportional to 19,926.68, 29,891.85 and 5,135.65 is: 7,703.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,926.68 : 29,891.85 = 5,135.65 : x
  2. Step 2: Convert to fraction form
    19,926.68/29,891.85 = 5,135.65/x
  3. Step 3: Cross multiply
    19,926.68x = 29,891.85 × 5,135.65
  4. Step 4: Simplify right side
    19,926.68x = 153,514,079.45
  5. Step 5: Solve for x
    x = 153,514,079.45/19,926.68
  6. Step 6: Final answer
    x = 7,703.95

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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.