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Finding the Fourth Proportional to 13,599.26, 18,767.82 and 7,631.32

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Solution

The fourth proportional to 13,599.26, 18,767.82 and 7,631.32 is: 10,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.26 : 18,767.82 = 7,631.32 : x
  2. Step 2: Convert to fraction form
    13,599.26/18,767.82 = 7,631.32/x
  3. Step 3: Cross multiply
    13,599.26x = 18,767.82 × 7,631.32
  4. Step 4: Simplify right side
    13,599.26x = 143,223,240.12
  5. Step 5: Solve for x
    x = 143,223,240.12/13,599.26
  6. Step 6: Final answer
    x = 10,531.69

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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.