Home / 20,356.65-28,092.74-11,403.96

Finding the Fourth Proportional to 20,356.65, 28,092.74 and 11,403.96

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Solution

The fourth proportional to 20,356.65, 28,092.74 and 11,403.96 is: 15,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.65 : 28,092.74 = 11,403.96 : x
  2. Step 2: Convert to fraction form
    20,356.65/28,092.74 = 11,403.96/x
  3. Step 3: Cross multiply
    20,356.65x = 28,092.74 × 11,403.96
  4. Step 4: Simplify right side
    20,356.65x = 320,368,573.95
  5. Step 5: Solve for x
    x = 320,368,573.95/20,356.65
  6. Step 6: Final answer
    x = 15,737.78

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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.