Home / 28,175.72-38,883.09-15,429.44

Finding the Fourth Proportional to 28,175.72, 38,883.09 and 15,429.44

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Solution

The fourth proportional to 28,175.72, 38,883.09 and 15,429.44 is: 21,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.72 : 38,883.09 = 15,429.44 : x
  2. Step 2: Convert to fraction form
    28,175.72/38,883.09 = 15,429.44/x
  3. Step 3: Cross multiply
    28,175.72x = 38,883.09 × 15,429.44
  4. Step 4: Simplify right side
    28,175.72x = 599,944,304.17
  5. Step 5: Solve for x
    x = 599,944,304.17/28,175.72
  6. Step 6: Final answer
    x = 21,292.95

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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.