Home / 28,229.76-42,338.46-11,573.40

Finding the Fourth Proportional to 28,229.76, 42,338.46 and 11,573.40

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Solution

The fourth proportional to 28,229.76, 42,338.46 and 11,573.40 is: 17,357.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,229.76 : 42,338.46 = 11,573.40 : x
  2. Step 2: Convert to fraction form
    28,229.76/42,338.46 = 11,573.40/x
  3. Step 3: Cross multiply
    28,229.76x = 42,338.46 × 11,573.40
  4. Step 4: Simplify right side
    28,229.76x = 489,999,932.96
  5. Step 5: Solve for x
    x = 489,999,932.96/28,229.76
  6. Step 6: Final answer
    x = 17,357.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.