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Finding the Fourth Proportional to 9,015.56, 12,447.35 and 8,069.74

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Solution

The fourth proportional to 9,015.56, 12,447.35 and 8,069.74 is: 11,141.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.56 : 12,447.35 = 8,069.74 : x
  2. Step 2: Convert to fraction form
    9,015.56/12,447.35 = 8,069.74/x
  3. Step 3: Cross multiply
    9,015.56x = 12,447.35 × 8,069.74
  4. Step 4: Simplify right side
    9,015.56x = 100,446,878.19
  5. Step 5: Solve for x
    x = 100,446,878.19/9,015.56
  6. Step 6: Final answer
    x = 11,141.50

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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.