Home / 13,377.72-18,467.94-8,665.80

Finding the Fourth Proportional to 13,377.72, 18,467.94 and 8,665.80

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Solution

The fourth proportional to 13,377.72, 18,467.94 and 8,665.80 is: 11,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,377.72 : 18,467.94 = 8,665.80 : x
  2. Step 2: Convert to fraction form
    13,377.72/18,467.94 = 8,665.80/x
  3. Step 3: Cross multiply
    13,377.72x = 18,467.94 × 8,665.80
  4. Step 4: Simplify right side
    13,377.72x = 160,039,474.45
  5. Step 5: Solve for x
    x = 160,039,474.45/13,377.72
  6. Step 6: Final answer
    x = 11,963.14

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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.