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Finding the Fourth Proportional to 18,954.62, 28,438.22 and 5,807.12

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Solution

The fourth proportional to 18,954.62, 28,438.22 and 5,807.12 is: 8,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.62 : 28,438.22 = 5,807.12 : x
  2. Step 2: Convert to fraction form
    18,954.62/28,438.22 = 5,807.12/x
  3. Step 3: Cross multiply
    18,954.62x = 28,438.22 × 5,807.12
  4. Step 4: Simplify right side
    18,954.62x = 165,144,156.13
  5. Step 5: Solve for x
    x = 165,144,156.13/18,954.62
  6. Step 6: Final answer
    x = 8,712.61

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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.