Home / 15,664.42-21,618.05-8,949.91

Finding the Fourth Proportional to 15,664.42, 21,618.05 and 8,949.91

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Solution

The fourth proportional to 15,664.42, 21,618.05 and 8,949.91 is: 12,351.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.42 : 21,618.05 = 8,949.91 : x
  2. Step 2: Convert to fraction form
    15,664.42/21,618.05 = 8,949.91/x
  3. Step 3: Cross multiply
    15,664.42x = 21,618.05 × 8,949.91
  4. Step 4: Simplify right side
    15,664.42x = 193,479,471.41
  5. Step 5: Solve for x
    x = 193,479,471.41/15,664.42
  6. Step 6: Final answer
    x = 12,351.52

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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.