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Finding the Fourth Proportional to 13,599.63, 18,768.26 and 7,631.82

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Solution

The fourth proportional to 13,599.63, 18,768.26 and 7,631.82 is: 10,532.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.63 : 18,768.26 = 7,631.82 : x
  2. Step 2: Convert to fraction form
    13,599.63/18,768.26 = 7,631.82/x
  3. Step 3: Cross multiply
    13,599.63x = 18,768.26 × 7,631.82
  4. Step 4: Simplify right side
    13,599.63x = 143,235,943.87
  5. Step 5: Solve for x
    x = 143,235,943.87/13,599.63
  6. Step 6: Final answer
    x = 10,532.34

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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.