Home / 28,236.42-42,338.43-8,509.14

Finding the Fourth Proportional to 28,236.42, 42,338.43 and 8,509.14

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Solution

The fourth proportional to 28,236.42, 42,338.43 and 8,509.14 is: 12,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.42 : 42,338.43 = 8,509.14 : x
  2. Step 2: Convert to fraction form
    28,236.42/42,338.43 = 8,509.14/x
  3. Step 3: Cross multiply
    28,236.42x = 42,338.43 × 8,509.14
  4. Step 4: Simplify right side
    28,236.42x = 360,263,628.25
  5. Step 5: Solve for x
    x = 360,263,628.25/28,236.42
  6. Step 6: Final answer
    x = 12,758.83

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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.