Home / 14,621.97-21,939.45-5,385.81

Finding the Fourth Proportional to 14,621.97, 21,939.45 and 5,385.81

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Solution

The fourth proportional to 14,621.97, 21,939.45 and 5,385.81 is: 8,081.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,621.97 : 21,939.45 = 5,385.81 : x
  2. Step 2: Convert to fraction form
    14,621.97/21,939.45 = 5,385.81/x
  3. Step 3: Cross multiply
    14,621.97x = 21,939.45 × 5,385.81
  4. Step 4: Simplify right side
    14,621.97x = 118,161,709.20
  5. Step 5: Solve for x
    x = 118,161,709.20/14,621.97
  6. Step 6: Final answer
    x = 8,081.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.