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Finding the Fourth Proportional to 18,489.85, 27,737.55 and 6,802.18

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Solution

The fourth proportional to 18,489.85, 27,737.55 and 6,802.18 is: 10,204.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.85 : 27,737.55 = 6,802.18 : x
  2. Step 2: Convert to fraction form
    18,489.85/27,737.55 = 6,802.18/x
  3. Step 3: Cross multiply
    18,489.85x = 27,737.55 × 6,802.18
  4. Step 4: Simplify right side
    18,489.85x = 188,675,807.86
  5. Step 5: Solve for x
    x = 188,675,807.86/18,489.85
  6. Step 6: Final answer
    x = 10,204.29

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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.