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Finding the Fourth Proportional to 26,928.45, 40,394.43 and 21,987.45

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Solution

The fourth proportional to 26,928.45, 40,394.43 and 21,987.45 is: 32,982.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928.45 : 40,394.43 = 21,987.45 : x
  2. Step 2: Convert to fraction form
    26,928.45/40,394.43 = 21,987.45/x
  3. Step 3: Cross multiply
    26,928.45x = 40,394.43 × 21,987.45
  4. Step 4: Simplify right side
    26,928.45x = 888,170,509.90
  5. Step 5: Solve for x
    x = 888,170,509.90/26,928.45
  6. Step 6: Final answer
    x = 32,982.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.