Home / 10,893.27-15,030.40-7,121.95

Finding the Fourth Proportional to 10,893.27, 15,030.40 and 7,121.95

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Solution

The fourth proportional to 10,893.27, 15,030.40 and 7,121.95 is: 9,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,893.27 : 15,030.40 = 7,121.95 : x
  2. Step 2: Convert to fraction form
    10,893.27/15,030.40 = 7,121.95/x
  3. Step 3: Cross multiply
    10,893.27x = 15,030.40 × 7,121.95
  4. Step 4: Simplify right side
    10,893.27x = 107,045,757.28
  5. Step 5: Solve for x
    x = 107,045,757.28/10,893.27
  6. Step 6: Final answer
    x = 9,826.78

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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.