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Finding the Fourth Proportional to 9,015.46, 12,427.21 and 8,291.32

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Solution

The fourth proportional to 9,015.46, 12,427.21 and 8,291.32 is: 11,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.46 : 12,427.21 = 8,291.32 : x
  2. Step 2: Convert to fraction form
    9,015.46/12,427.21 = 8,291.32/x
  3. Step 3: Cross multiply
    9,015.46x = 12,427.21 × 8,291.32
  4. Step 4: Simplify right side
    9,015.46x = 103,037,974.82
  5. Step 5: Solve for x
    x = 103,037,974.82/9,015.46
  6. Step 6: Final answer
    x = 11,429.03

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Double scale
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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.