Home / 28,488.88-39,311.12-15,916

Finding the Fourth Proportional to 28,488.88, 39,311.12 and 15,916

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Solution

The fourth proportional to 28,488.88, 39,311.12 and 15,916 is: 21,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.88 : 39,311.12 = 15,916 : x
  2. Step 2: Convert to fraction form
    28,488.88/39,311.12 = 15,916/x
  3. Step 3: Cross multiply
    28,488.88x = 39,311.12 × 15,916
  4. Step 4: Simplify right side
    28,488.88x = 625,675,785.92
  5. Step 5: Solve for x
    x = 625,675,785.92/28,488.88
  6. Step 6: Final answer
    x = 21,962.11

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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.