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Finding the Fourth Proportional to 13,297.71, 19,910.57 and 8,905.71

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Solution

The fourth proportional to 13,297.71, 19,910.57 and 8,905.71 is: 13,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.71 : 19,910.57 = 8,905.71 : x
  2. Step 2: Convert to fraction form
    13,297.71/19,910.57 = 8,905.71/x
  3. Step 3: Cross multiply
    13,297.71x = 19,910.57 × 8,905.71
  4. Step 4: Simplify right side
    13,297.71x = 177,317,717.83
  5. Step 5: Solve for x
    x = 177,317,717.83/13,297.71
  6. Step 6: Final answer
    x = 13,334.46

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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.