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Finding the Fourth Proportional to 16,544.42, 22,831.52 and 8,990.90

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Solution

The fourth proportional to 16,544.42, 22,831.52 and 8,990.90 is: 12,407.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,544.42 : 22,831.52 = 8,990.90 : x
  2. Step 2: Convert to fraction form
    16,544.42/22,831.52 = 8,990.90/x
  3. Step 3: Cross multiply
    16,544.42x = 22,831.52 × 8,990.90
  4. Step 4: Simplify right side
    16,544.42x = 205,275,890.25
  5. Step 5: Solve for x
    x = 205,275,890.25/16,544.42
  6. Step 6: Final answer
    x = 12,407.56

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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.