Home / 31,831.38-43,949.27-19,900.08

Finding the Fourth Proportional to 31,831.38, 43,949.27 and 19,900.08

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Solution

The fourth proportional to 31,831.38, 43,949.27 and 19,900.08 is: 27,475.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,831.38 : 43,949.27 = 19,900.08 : x
  2. Step 2: Convert to fraction form
    31,831.38/43,949.27 = 19,900.08/x
  3. Step 3: Cross multiply
    31,831.38x = 43,949.27 × 19,900.08
  4. Step 4: Simplify right side
    31,831.38x = 874,593,889.44
  5. Step 5: Solve for x
    x = 874,593,889.44/31,831.38
  6. Step 6: Final answer
    x = 27,475.84

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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.