Home / 31,767.30-43,831.80-19,191.78

Finding the Fourth Proportional to 31,767.30, 43,831.80 and 19,191.78

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Solution

The fourth proportional to 31,767.30, 43,831.80 and 19,191.78 is: 26,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,767.30 : 43,831.80 = 19,191.78 : x
  2. Step 2: Convert to fraction form
    31,767.30/43,831.80 = 19,191.78/x
  3. Step 3: Cross multiply
    31,767.30x = 43,831.80 × 19,191.78
  4. Step 4: Simplify right side
    31,767.30x = 841,210,262.60
  5. Step 5: Solve for x
    x = 841,210,262.60/31,767.30
  6. Step 6: Final answer
    x = 26,480.38

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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.