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Finding the Fourth Proportional to 15,168.82, 20,933.01 and 8,796.65

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Solution

The fourth proportional to 15,168.82, 20,933.01 and 8,796.65 is: 12,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.82 : 20,933.01 = 8,796.65 : x
  2. Step 2: Convert to fraction form
    15,168.82/20,933.01 = 8,796.65/x
  3. Step 3: Cross multiply
    15,168.82x = 20,933.01 × 8,796.65
  4. Step 4: Simplify right side
    15,168.82x = 184,140,362.42
  5. Step 5: Solve for x
    x = 184,140,362.42/15,168.82
  6. Step 6: Final answer
    x = 12,139.40

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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.