Home / 21,616.64-29,831.18-12,183.38

Finding the Fourth Proportional to 21,616.64, 29,831.18 and 12,183.38

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Solution

The fourth proportional to 21,616.64, 29,831.18 and 12,183.38 is: 16,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.64 : 29,831.18 = 12,183.38 : x
  2. Step 2: Convert to fraction form
    21,616.64/29,831.18 = 12,183.38/x
  3. Step 3: Cross multiply
    21,616.64x = 29,831.18 × 12,183.38
  4. Step 4: Simplify right side
    21,616.64x = 363,444,391.72
  5. Step 5: Solve for x
    x = 363,444,391.72/21,616.64
  6. Step 6: Final answer
    x = 16,813.18

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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.