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Finding the Fourth Proportional to 9,406.56, 13,040.49 and 8,907.21

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Solution

The fourth proportional to 9,406.56, 13,040.49 and 8,907.21 is: 12,348.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,406.56 : 13,040.49 = 8,907.21 : x
  2. Step 2: Convert to fraction form
    9,406.56/13,040.49 = 8,907.21/x
  3. Step 3: Cross multiply
    9,406.56x = 13,040.49 × 8,907.21
  4. Step 4: Simplify right side
    9,406.56x = 116,154,382.93
  5. Step 5: Solve for x
    x = 116,154,382.93/9,406.56
  6. Step 6: Final answer
    x = 12,348.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.