Home / 28,488.58-42,738.57-8,766.39

Finding the Fourth Proportional to 28,488.58, 42,738.57 and 8,766.39

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Solution

The fourth proportional to 28,488.58, 42,738.57 and 8,766.39 is: 13,151.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.58 : 42,738.57 = 8,766.39 : x
  2. Step 2: Convert to fraction form
    28,488.58/42,738.57 = 8,766.39/x
  3. Step 3: Cross multiply
    28,488.58x = 42,738.57 × 8,766.39
  4. Step 4: Simplify right side
    28,488.58x = 374,662,972.66
  5. Step 5: Solve for x
    x = 374,662,972.66/28,488.58
  6. Step 6: Final answer
    x = 13,151.34

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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.