Home / 20,935.60-28,891.32-11,504.14

Finding the Fourth Proportional to 20,935.60, 28,891.32 and 11,504.14

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Solution

The fourth proportional to 20,935.60, 28,891.32 and 11,504.14 is: 15,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.60 : 28,891.32 = 11,504.14 : x
  2. Step 2: Convert to fraction form
    20,935.60/28,891.32 = 11,504.14/x
  3. Step 3: Cross multiply
    20,935.60x = 28,891.32 × 11,504.14
  4. Step 4: Simplify right side
    20,935.60x = 332,369,790.06
  5. Step 5: Solve for x
    x = 332,369,790.06/20,935.60
  6. Step 6: Final answer
    x = 15,875.82

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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.