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Finding the Fourth Proportional to 9,898.58, 14,906.60 and 8,615.54

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Solution

The fourth proportional to 9,898.58, 14,906.60 and 8,615.54 is: 12,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,898.58 : 14,906.60 = 8,615.54 : x
  2. Step 2: Convert to fraction form
    9,898.58/14,906.60 = 8,615.54/x
  3. Step 3: Cross multiply
    9,898.58x = 14,906.60 × 8,615.54
  4. Step 4: Simplify right side
    9,898.58x = 128,428,408.56
  5. Step 5: Solve for x
    x = 128,428,408.56/9,898.58
  6. Step 6: Final answer
    x = 12,974.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.