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Finding the Fourth Proportional to 13,339.49, 18,410.27 and 7,674.09

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Solution

The fourth proportional to 13,339.49, 18,410.27 and 7,674.09 is: 10,591.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.49 : 18,410.27 = 7,674.09 : x
  2. Step 2: Convert to fraction form
    13,339.49/18,410.27 = 7,674.09/x
  3. Step 3: Cross multiply
    13,339.49x = 18,410.27 × 7,674.09
  4. Step 4: Simplify right side
    13,339.49x = 141,282,068.90
  5. Step 5: Solve for x
    x = 141,282,068.90/13,339.49
  6. Step 6: Final answer
    x = 10,591.26

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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.