Home / 20,934.64-28,889.82-11,374.60

Finding the Fourth Proportional to 20,934.64, 28,889.82 and 11,374.60

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Solution

The fourth proportional to 20,934.64, 28,889.82 and 11,374.60 is: 15,696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.64 : 28,889.82 = 11,374.60 : x
  2. Step 2: Convert to fraction form
    20,934.64/28,889.82 = 11,374.60/x
  3. Step 3: Cross multiply
    20,934.64x = 28,889.82 × 11,374.60
  4. Step 4: Simplify right side
    20,934.64x = 328,610,146.57
  5. Step 5: Solve for x
    x = 328,610,146.57/20,934.64
  6. Step 6: Final answer
    x = 15,696.96

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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.