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Finding the Fourth Proportional to 15,165.44, 20,928.36 and 8,793.28

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Solution

The fourth proportional to 15,165.44, 20,928.36 and 8,793.28 is: 12,134.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.44 : 20,928.36 = 8,793.28 : x
  2. Step 2: Convert to fraction form
    15,165.44/20,928.36 = 8,793.28/x
  3. Step 3: Cross multiply
    15,165.44x = 20,928.36 × 8,793.28
  4. Step 4: Simplify right side
    15,165.44x = 184,028,929.42
  5. Step 5: Solve for x
    x = 184,028,929.42/15,165.44
  6. Step 6: Final answer
    x = 12,134.76

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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.