Home / 19,831.53-27,367.98-12,279.09

Finding the Fourth Proportional to 19,831.53, 27,367.98 and 12,279.09

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Solution

The fourth proportional to 19,831.53, 27,367.98 and 12,279.09 is: 16,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.53 : 27,367.98 = 12,279.09 : x
  2. Step 2: Convert to fraction form
    19,831.53/27,367.98 = 12,279.09/x
  3. Step 3: Cross multiply
    19,831.53x = 27,367.98 × 12,279.09
  4. Step 4: Simplify right side
    19,831.53x = 336,053,889.54
  5. Step 5: Solve for x
    x = 336,053,889.54/19,831.53
  6. Step 6: Final answer
    x = 16,945.43

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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.