Home / 31,411.14-43,350.04-21,361.88

Finding the Fourth Proportional to 31,411.14, 43,350.04 and 21,361.88

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Solution

The fourth proportional to 31,411.14, 43,350.04 and 21,361.88 is: 29,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,411.14 : 43,350.04 = 21,361.88 : x
  2. Step 2: Convert to fraction form
    31,411.14/43,350.04 = 21,361.88/x
  3. Step 3: Cross multiply
    31,411.14x = 43,350.04 × 21,361.88
  4. Step 4: Simplify right side
    31,411.14x = 926,038,352.48
  5. Step 5: Solve for x
    x = 926,038,352.48/31,411.14
  6. Step 6: Final answer
    x = 29,481.21

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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.