Home / 28,544.78-42,761.76-21,034.71

Finding the Fourth Proportional to 28,544.78, 42,761.76 and 21,034.71

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Solution

The fourth proportional to 28,544.78, 42,761.76 and 21,034.71 is: 31,511.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.78 : 42,761.76 = 21,034.71 : x
  2. Step 2: Convert to fraction form
    28,544.78/42,761.76 = 21,034.71/x
  3. Step 3: Cross multiply
    28,544.78x = 42,761.76 × 21,034.71
  4. Step 4: Simplify right side
    28,544.78x = 899,481,113.79
  5. Step 5: Solve for x
    x = 899,481,113.79/28,544.78
  6. Step 6: Final answer
    x = 31,511.23

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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.