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Finding the Fourth Proportional to 18,992.02, 28,487.94 and 5,141.02

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Solution

The fourth proportional to 18,992.02, 28,487.94 and 5,141.02 is: 7,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.02 : 28,487.94 = 5,141.02 : x
  2. Step 2: Convert to fraction form
    18,992.02/28,487.94 = 5,141.02/x
  3. Step 3: Cross multiply
    18,992.02x = 28,487.94 × 5,141.02
  4. Step 4: Simplify right side
    18,992.02x = 146,457,069.30
  5. Step 5: Solve for x
    x = 146,457,069.30/18,992.02
  6. Step 6: Final answer
    x = 7,711.51

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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.