Home / 18,911.08-28,370.82-5,764.45

Finding the Fourth Proportional to 18,911.08, 28,370.82 and 5,764.45

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Solution

The fourth proportional to 18,911.08, 28,370.82 and 5,764.45 is: 8,647.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.08 : 28,370.82 = 5,764.45 : x
  2. Step 2: Convert to fraction form
    18,911.08/28,370.82 = 5,764.45/x
  3. Step 3: Cross multiply
    18,911.08x = 28,370.82 × 5,764.45
  4. Step 4: Simplify right side
    18,911.08x = 163,542,173.35
  5. Step 5: Solve for x
    x = 163,542,173.35/18,911.08
  6. Step 6: Final answer
    x = 8,647.96

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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.