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Finding the Fourth Proportional to 13,401.84, 18,488.48 and 8,367.31

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Solution

The fourth proportional to 13,401.84, 18,488.48 and 8,367.31 is: 11,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.84 : 18,488.48 = 8,367.31 : x
  2. Step 2: Convert to fraction form
    13,401.84/18,488.48 = 8,367.31/x
  3. Step 3: Cross multiply
    13,401.84x = 18,488.48 × 8,367.31
  4. Step 4: Simplify right side
    13,401.84x = 154,698,755.53
  5. Step 5: Solve for x
    x = 154,698,755.53/13,401.84
  6. Step 6: Final answer
    x = 11,543.10

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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.