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Finding the Fourth Proportional to 12,422.98, 18,558.91 and 8,884.90

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Solution

The fourth proportional to 12,422.98, 18,558.91 and 8,884.90 is: 13,273.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.98 : 18,558.91 = 8,884.90 : x
  2. Step 2: Convert to fraction form
    12,422.98/18,558.91 = 8,884.90/x
  3. Step 3: Cross multiply
    12,422.98x = 18,558.91 × 8,884.90
  4. Step 4: Simplify right side
    12,422.98x = 164,894,024.17
  5. Step 5: Solve for x
    x = 164,894,024.17/12,422.98
  6. Step 6: Final answer
    x = 13,273.31

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.