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Finding the Fourth Proportional to 28,025.47, 42,033.78 and 7,757.44

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Solution

The fourth proportional to 28,025.47, 42,033.78 and 7,757.44 is: 11,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025.47 : 42,033.78 = 7,757.44 : x
  2. Step 2: Convert to fraction form
    28,025.47/42,033.78 = 7,757.44/x
  3. Step 3: Cross multiply
    28,025.47x = 42,033.78 × 7,757.44
  4. Step 4: Simplify right side
    28,025.47x = 326,074,526.32
  5. Step 5: Solve for x
    x = 326,074,526.32/28,025.47
  6. Step 6: Final answer
    x = 11,634.94

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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.