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Finding the Fourth Proportional to 18,963.56, 28,445.16 and 6,483.44

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Solution

The fourth proportional to 18,963.56, 28,445.16 and 6,483.44 is: 9,725.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.56 : 28,445.16 = 6,483.44 : x
  2. Step 2: Convert to fraction form
    18,963.56/28,445.16 = 6,483.44/x
  3. Step 3: Cross multiply
    18,963.56x = 28,445.16 × 6,483.44
  4. Step 4: Simplify right side
    18,963.56x = 184,422,488.15
  5. Step 5: Solve for x
    x = 184,422,488.15/18,963.56
  6. Step 6: Final answer
    x = 9,725.10

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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.