Home / 13,553.84-18,705.93-8,249.42

Finding the Fourth Proportional to 13,553.84, 18,705.93 and 8,249.42

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Solution

The fourth proportional to 13,553.84, 18,705.93 and 8,249.42 is: 11,385.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.84 : 18,705.93 = 8,249.42 : x
  2. Step 2: Convert to fraction form
    13,553.84/18,705.93 = 8,249.42/x
  3. Step 3: Cross multiply
    13,553.84x = 18,705.93 × 8,249.42
  4. Step 4: Simplify right side
    13,553.84x = 154,313,073.06
  5. Step 5: Solve for x
    x = 154,313,073.06/13,553.84
  6. Step 6: Final answer
    x = 11,385.19

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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.