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Finding the Fourth Proportional to 18,883.67, 28,315.00 and 7,797.87

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Solution

The fourth proportional to 18,883.67, 28,315.00 and 7,797.87 is: 11,692.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.67 : 28,315.00 = 7,797.87 : x
  2. Step 2: Convert to fraction form
    18,883.67/28,315.00 = 7,797.87/x
  3. Step 3: Cross multiply
    18,883.67x = 28,315.00 × 7,797.87
  4. Step 4: Simplify right side
    18,883.67x = 220,796,698.80
  5. Step 5: Solve for x
    x = 220,796,698.80/18,883.67
  6. Step 6: Final answer
    x = 11,692.47

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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.