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Finding the Fourth Proportional to 8,907.49, 13,372.16 and 8,555.13

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Solution

The fourth proportional to 8,907.49, 13,372.16 and 8,555.13 is: 12,843.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.49 : 13,372.16 = 8,555.13 : x
  2. Step 2: Convert to fraction form
    8,907.49/13,372.16 = 8,555.13/x
  3. Step 3: Cross multiply
    8,907.49x = 13,372.16 × 8,555.13
  4. Step 4: Simplify right side
    8,907.49x = 114,400,524.41
  5. Step 5: Solve for x
    x = 114,400,524.41/8,907.49
  6. Step 6: Final answer
    x = 12,843.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.