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Finding the Fourth Proportional to 12,478.44, 18,702.08 and 6,240.23

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Solution

The fourth proportional to 12,478.44, 18,702.08 and 6,240.23 is: 9,352.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.44 : 18,702.08 = 6,240.23 : x
  2. Step 2: Convert to fraction form
    12,478.44/18,702.08 = 6,240.23/x
  3. Step 3: Cross multiply
    12,478.44x = 18,702.08 × 6,240.23
  4. Step 4: Simplify right side
    12,478.44x = 116,705,155.97
  5. Step 5: Solve for x
    x = 116,705,155.97/12,478.44
  6. Step 6: Final answer
    x = 9,352.54

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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.