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Finding the Fourth Proportional to 18,892.70, 28,340.06 and 5,744.06

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Solution

The fourth proportional to 18,892.70, 28,340.06 and 5,744.06 is: 8,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.70 : 28,340.06 = 5,744.06 : x
  2. Step 2: Convert to fraction form
    18,892.70/28,340.06 = 5,744.06/x
  3. Step 3: Cross multiply
    18,892.70x = 28,340.06 × 5,744.06
  4. Step 4: Simplify right side
    18,892.70x = 162,787,005.04
  5. Step 5: Solve for x
    x = 162,787,005.04/18,892.70
  6. Step 6: Final answer
    x = 8,616.40

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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.