Home / 14,943.78-20,621.94-8,229.38

Finding the Fourth Proportional to 14,943.78, 20,621.94 and 8,229.38

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Solution

The fourth proportional to 14,943.78, 20,621.94 and 8,229.38 is: 11,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,943.78 : 20,621.94 = 8,229.38 : x
  2. Step 2: Convert to fraction form
    14,943.78/20,621.94 = 8,229.38/x
  3. Step 3: Cross multiply
    14,943.78x = 20,621.94 × 8,229.38
  4. Step 4: Simplify right side
    14,943.78x = 169,705,677.49
  5. Step 5: Solve for x
    x = 169,705,677.49/14,943.78
  6. Step 6: Final answer
    x = 11,356.28

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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.