Home / 18,690.35-28,035.38-5,541.62

Finding the Fourth Proportional to 18,690.35, 28,035.38 and 5,541.62

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Solution

The fourth proportional to 18,690.35, 28,035.38 and 5,541.62 is: 8,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.35 : 28,035.38 = 5,541.62 : x
  2. Step 2: Convert to fraction form
    18,690.35/28,035.38 = 5,541.62/x
  3. Step 3: Cross multiply
    18,690.35x = 28,035.38 × 5,541.62
  4. Step 4: Simplify right side
    18,690.35x = 155,361,296.19
  5. Step 5: Solve for x
    x = 155,361,296.19/18,690.35
  6. Step 6: Final answer
    x = 8,312.38

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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.