Home / 18,831.30-25,976.07-12,114.78

Finding the Fourth Proportional to 18,831.30, 25,976.07 and 12,114.78

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Solution

The fourth proportional to 18,831.30, 25,976.07 and 12,114.78 is: 16,711.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.30 : 25,976.07 = 12,114.78 : x
  2. Step 2: Convert to fraction form
    18,831.30/25,976.07 = 12,114.78/x
  3. Step 3: Cross multiply
    18,831.30x = 25,976.07 × 12,114.78
  4. Step 4: Simplify right side
    18,831.30x = 314,694,373.31
  5. Step 5: Solve for x
    x = 314,694,373.31/18,831.30
  6. Step 6: Final answer
    x = 16,711.24

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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.