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Finding the Fourth Proportional to 27,894.87, 38,494.78 and 15,147.95

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Solution

The fourth proportional to 27,894.87, 38,494.78 and 15,147.95 is: 20,904.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,894.87 : 38,494.78 = 15,147.95 : x
  2. Step 2: Convert to fraction form
    27,894.87/38,494.78 = 15,147.95/x
  3. Step 3: Cross multiply
    27,894.87x = 38,494.78 × 15,147.95
  4. Step 4: Simplify right side
    27,894.87x = 583,116,772.36
  5. Step 5: Solve for x
    x = 583,116,772.36/27,894.87
  6. Step 6: Final answer
    x = 20,904.09

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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.