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Finding the Fourth Proportional to 16,660.68, 22,991.76 and 9,208.68

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Solution

The fourth proportional to 16,660.68, 22,991.76 and 9,208.68 is: 12,707.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,660.68 : 22,991.76 = 9,208.68 : x
  2. Step 2: Convert to fraction form
    16,660.68/22,991.76 = 9,208.68/x
  3. Step 3: Cross multiply
    16,660.68x = 22,991.76 × 9,208.68
  4. Step 4: Simplify right side
    16,660.68x = 211,723,760.48
  5. Step 5: Solve for x
    x = 211,723,760.48/16,660.68
  6. Step 6: Final answer
    x = 12,707.99

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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.