Home / 25,267.87-34,872.89-21,011.61

Finding the Fourth Proportional to 25,267.87, 34,872.89 and 21,011.61

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Solution

The fourth proportional to 25,267.87, 34,872.89 and 21,011.61 is: 28,998.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,267.87 : 34,872.89 = 21,011.61 : x
  2. Step 2: Convert to fraction form
    25,267.87/34,872.89 = 21,011.61/x
  3. Step 3: Cross multiply
    25,267.87x = 34,872.89 × 21,011.61
  4. Step 4: Simplify right side
    25,267.87x = 732,735,564.25
  5. Step 5: Solve for x
    x = 732,735,564.25/25,267.87
  6. Step 6: Final answer
    x = 28,998.71

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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.