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Finding the Fourth Proportional to 15,019.25, 20,726.48 and 8,304.75

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Solution

The fourth proportional to 15,019.25, 20,726.48 and 8,304.75 is: 11,460.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.25 : 20,726.48 = 8,304.75 : x
  2. Step 2: Convert to fraction form
    15,019.25/20,726.48 = 8,304.75/x
  3. Step 3: Cross multiply
    15,019.25x = 20,726.48 × 8,304.75
  4. Step 4: Simplify right side
    15,019.25x = 172,128,255.54
  5. Step 5: Solve for x
    x = 172,128,255.54/15,019.25
  6. Step 6: Final answer
    x = 11,460.51

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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.