Home / 20,664.81-28,517.76-11,233.41

Finding the Fourth Proportional to 20,664.81, 28,517.76 and 11,233.41

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Solution

The fourth proportional to 20,664.81, 28,517.76 and 11,233.41 is: 15,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.81 : 28,517.76 = 11,233.41 : x
  2. Step 2: Convert to fraction form
    20,664.81/28,517.76 = 11,233.41/x
  3. Step 3: Cross multiply
    20,664.81x = 28,517.76 × 11,233.41
  4. Step 4: Simplify right side
    20,664.81x = 320,351,690.36
  5. Step 5: Solve for x
    x = 320,351,690.36/20,664.81
  6. Step 6: Final answer
    x = 15,502.28

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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.