Home / 20,664.45-28,516.15-11,233.01

Finding the Fourth Proportional to 20,664.45, 28,516.15 and 11,233.01

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Solution

The fourth proportional to 20,664.45, 28,516.15 and 11,233.01 is: 15,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.45 : 28,516.15 = 11,233.01 : x
  2. Step 2: Convert to fraction form
    20,664.45/28,516.15 = 11,233.01/x
  3. Step 3: Cross multiply
    20,664.45x = 28,516.15 × 11,233.01
  4. Step 4: Simplify right side
    20,664.45x = 320,322,283.44
  5. Step 5: Solve for x
    x = 320,322,283.44/20,664.45
  6. Step 6: Final answer
    x = 15,501.13

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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.