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Finding the Fourth Proportional to 18,950.64, 28,422.96 and 6,469.44

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Solution

The fourth proportional to 18,950.64, 28,422.96 and 6,469.44 is: 9,703.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.64 : 28,422.96 = 6,469.44 : x
  2. Step 2: Convert to fraction form
    18,950.64/28,422.96 = 6,469.44/x
  3. Step 3: Cross multiply
    18,950.64x = 28,422.96 × 6,469.44
  4. Step 4: Simplify right side
    18,950.64x = 183,880,634.34
  5. Step 5: Solve for x
    x = 183,880,634.34/18,950.64
  6. Step 6: Final answer
    x = 9,703.14

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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.