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Finding the Fourth Proportional to 14,001.63, 20,981.34 and 8,448.81

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Solution

The fourth proportional to 14,001.63, 20,981.34 and 8,448.81 is: 12,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.63 : 20,981.34 = 8,448.81 : x
  2. Step 2: Convert to fraction form
    14,001.63/20,981.34 = 8,448.81/x
  3. Step 3: Cross multiply
    14,001.63x = 20,981.34 × 8,448.81
  4. Step 4: Simplify right side
    14,001.63x = 177,267,355.21
  5. Step 5: Solve for x
    x = 177,267,355.21/14,001.63
  6. Step 6: Final answer
    x = 12,660.48

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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.