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Finding the Fourth Proportional to 18,976.72, 28,445.03 and 6,323.05

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Solution

The fourth proportional to 18,976.72, 28,445.03 and 6,323.05 is: 9,477.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.72 : 28,445.03 = 6,323.05 : x
  2. Step 2: Convert to fraction form
    18,976.72/28,445.03 = 6,323.05/x
  3. Step 3: Cross multiply
    18,976.72x = 28,445.03 × 6,323.05
  4. Step 4: Simplify right side
    18,976.72x = 179,859,374.59
  5. Step 5: Solve for x
    x = 179,859,374.59/18,976.72
  6. Step 6: Final answer
    x = 9,477.90

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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.