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Finding the Fourth Proportional to 15,069.56, 20,796.14 and 8,355.32

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Solution

The fourth proportional to 15,069.56, 20,796.14 and 8,355.32 is: 11,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,069.56 : 20,796.14 = 8,355.32 : x
  2. Step 2: Convert to fraction form
    15,069.56/20,796.14 = 8,355.32/x
  3. Step 3: Cross multiply
    15,069.56x = 20,796.14 × 8,355.32
  4. Step 4: Simplify right side
    15,069.56x = 173,758,404.46
  5. Step 5: Solve for x
    x = 173,758,404.46/15,069.56
  6. Step 6: Final answer
    x = 11,530.42

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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.