Home / 18,690.85-28,036.34-5,543.33

Finding the Fourth Proportional to 18,690.85, 28,036.34 and 5,543.33

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Solution

The fourth proportional to 18,690.85, 28,036.34 and 5,543.33 is: 8,315.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.85 : 28,036.34 = 5,543.33 : x
  2. Step 2: Convert to fraction form
    18,690.85/28,036.34 = 5,543.33/x
  3. Step 3: Cross multiply
    18,690.85x = 28,036.34 × 5,543.33
  4. Step 4: Simplify right side
    18,690.85x = 155,414,656.90
  5. Step 5: Solve for x
    x = 155,414,656.90/18,690.85
  6. Step 6: Final answer
    x = 8,315.02

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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.