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Finding the Fourth Proportional to 28,403.94, 42,605.28 and 7,627.44

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Solution

The fourth proportional to 28,403.94, 42,605.28 and 7,627.44 is: 11,440.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.94 : 42,605.28 = 7,627.44 : x
  2. Step 2: Convert to fraction form
    28,403.94/42,605.28 = 7,627.44/x
  3. Step 3: Cross multiply
    28,403.94x = 42,605.28 × 7,627.44
  4. Step 4: Simplify right side
    28,403.94x = 324,969,216.88
  5. Step 5: Solve for x
    x = 324,969,216.88/28,403.94
  6. Step 6: Final answer
    x = 11,440.99

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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.