Home / 31,761.04-43,820.32-19,831.36

Finding the Fourth Proportional to 31,761.04, 43,820.32 and 19,831.36

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Solution

The fourth proportional to 31,761.04, 43,820.32 and 19,831.36 is: 27,361.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,761.04 : 43,820.32 = 19,831.36 : x
  2. Step 2: Convert to fraction form
    31,761.04/43,820.32 = 19,831.36/x
  3. Step 3: Cross multiply
    31,761.04x = 43,820.32 × 19,831.36
  4. Step 4: Simplify right side
    31,761.04x = 869,016,541.24
  5. Step 5: Solve for x
    x = 869,016,541.24/31,761.04
  6. Step 6: Final answer
    x = 27,361.09

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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.