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Finding the Fourth Proportional to 9,917.48, 13,687.20 and 6,335.74

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Solution

The fourth proportional to 9,917.48, 13,687.20 and 6,335.74 is: 8,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.48 : 13,687.20 = 6,335.74 : x
  2. Step 2: Convert to fraction form
    9,917.48/13,687.20 = 6,335.74/x
  3. Step 3: Cross multiply
    9,917.48x = 13,687.20 × 6,335.74
  4. Step 4: Simplify right side
    9,917.48x = 86,718,540.53
  5. Step 5: Solve for x
    x = 86,718,540.53/9,917.48
  6. Step 6: Final answer
    x = 8,744.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.