Home / 19,831.43-27,359.82-12,661.61

Finding the Fourth Proportional to 19,831.43, 27,359.82 and 12,661.61

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Solution

The fourth proportional to 19,831.43, 27,359.82 and 12,661.61 is: 17,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.43 : 27,359.82 = 12,661.61 : x
  2. Step 2: Convert to fraction form
    19,831.43/27,359.82 = 12,661.61/x
  3. Step 3: Cross multiply
    19,831.43x = 27,359.82 × 12,661.61
  4. Step 4: Simplify right side
    19,831.43x = 346,419,233.71
  5. Step 5: Solve for x
    x = 346,419,233.71/19,831.43
  6. Step 6: Final answer
    x = 17,468.20

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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.