Home / 31,772.40-43,845.24-19,669.68

Finding the Fourth Proportional to 31,772.40, 43,845.24 and 19,669.68

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Solution

The fourth proportional to 31,772.40, 43,845.24 and 19,669.68 is: 27,143.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,772.40 : 43,845.24 = 19,669.68 : x
  2. Step 2: Convert to fraction form
    31,772.40/43,845.24 = 19,669.68/x
  3. Step 3: Cross multiply
    31,772.40x = 43,845.24 × 19,669.68
  4. Step 4: Simplify right side
    31,772.40x = 862,421,840.32
  5. Step 5: Solve for x
    x = 862,421,840.32/31,772.40
  6. Step 6: Final answer
    x = 27,143.74

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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.