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Finding the Fourth Proportional to 28,523.98, 42,785.82 and 7,747.48

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Solution

The fourth proportional to 28,523.98, 42,785.82 and 7,747.48 is: 11,621.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,523.98 : 42,785.82 = 7,747.48 : x
  2. Step 2: Convert to fraction form
    28,523.98/42,785.82 = 7,747.48/x
  3. Step 3: Cross multiply
    28,523.98x = 42,785.82 × 7,747.48
  4. Step 4: Simplify right side
    28,523.98x = 331,482,284.73
  5. Step 5: Solve for x
    x = 331,482,284.73/28,523.98
  6. Step 6: Final answer
    x = 11,621.18

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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.