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Finding the Fourth Proportional to 28,170.52, 38,874 and 15,594.28

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Solution

The fourth proportional to 28,170.52, 38,874 and 15,594.28 is: 21,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.52 : 38,874 = 15,594.28 : x
  2. Step 2: Convert to fraction form
    28,170.52/38,874 = 15,594.28/x
  3. Step 3: Cross multiply
    28,170.52x = 38,874 × 15,594.28
  4. Step 4: Simplify right side
    28,170.52x = 606,212,040.72
  5. Step 5: Solve for x
    x = 606,212,040.72/28,170.52
  6. Step 6: Final answer
    x = 21,519.38

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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.