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Finding the Fourth Proportional to 28,240.62, 42,357.69 and 7,465.74

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Solution

The fourth proportional to 28,240.62, 42,357.69 and 7,465.74 is: 11,197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.62 : 42,357.69 = 7,465.74 : x
  2. Step 2: Convert to fraction form
    28,240.62/42,357.69 = 7,465.74/x
  3. Step 3: Cross multiply
    28,240.62x = 42,357.69 × 7,465.74
  4. Step 4: Simplify right side
    28,240.62x = 316,231,500.54
  5. Step 5: Solve for x
    x = 316,231,500.54/28,240.62
  6. Step 6: Final answer
    x = 11,197.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.