Home / 31,787.64-43,869-17,640.48

Finding the Fourth Proportional to 31,787.64, 43,869 and 17,640.48

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Solution

The fourth proportional to 31,787.64, 43,869 and 17,640.48 is: 24,345.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.64 : 43,869 = 17,640.48 : x
  2. Step 2: Convert to fraction form
    31,787.64/43,869 = 17,640.48/x
  3. Step 3: Cross multiply
    31,787.64x = 43,869 × 17,640.48
  4. Step 4: Simplify right side
    31,787.64x = 773,870,217.12
  5. Step 5: Solve for x
    x = 773,870,217.12/31,787.64
  6. Step 6: Final answer
    x = 24,345.00

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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.