Home / 28,028.88-38,678.31-17,418.42

Finding the Fourth Proportional to 28,028.88, 38,678.31 and 17,418.42

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Solution

The fourth proportional to 28,028.88, 38,678.31 and 17,418.42 is: 24,036.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.88 : 38,678.31 = 17,418.42 : x
  2. Step 2: Convert to fraction form
    28,028.88/38,678.31 = 17,418.42/x
  3. Step 3: Cross multiply
    28,028.88x = 38,678.31 × 17,418.42
  4. Step 4: Simplify right side
    28,028.88x = 673,715,048.47
  5. Step 5: Solve for x
    x = 673,715,048.47/28,028.88
  6. Step 6: Final answer
    x = 24,036.46

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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.