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Finding the Fourth Proportional to 16,660.72, 22,990.44 and 9,208.72

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Solution

The fourth proportional to 16,660.72, 22,990.44 and 9,208.72 is: 12,707.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,660.72 : 22,990.44 = 9,208.72 : x
  2. Step 2: Convert to fraction form
    16,660.72/22,990.44 = 9,208.72/x
  3. Step 3: Cross multiply
    16,660.72x = 22,990.44 × 9,208.72
  4. Step 4: Simplify right side
    16,660.72x = 211,712,524.64
  5. Step 5: Solve for x
    x = 211,712,524.64/16,660.72
  6. Step 6: Final answer
    x = 12,707.29

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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.