Home / 28,087.20-42,137.68-8,365.68

Finding the Fourth Proportional to 28,087.20, 42,137.68 and 8,365.68

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Solution

The fourth proportional to 28,087.20, 42,137.68 and 8,365.68 is: 12,550.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.20 : 42,137.68 = 8,365.68 : x
  2. Step 2: Convert to fraction form
    28,087.20/42,137.68 = 8,365.68/x
  3. Step 3: Cross multiply
    28,087.20x = 42,137.68 × 8,365.68
  4. Step 4: Simplify right side
    28,087.20x = 352,510,346.82
  5. Step 5: Solve for x
    x = 352,510,346.82/28,087.20
  6. Step 6: Final answer
    x = 12,550.57

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1.5x scale

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.