Home / 31,201.20-46,801.80-13,705.20

Finding the Fourth Proportional to 31,201.20, 46,801.80 and 13,705.20

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Solution

The fourth proportional to 31,201.20, 46,801.80 and 13,705.20 is: 20,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,201.20 : 46,801.80 = 13,705.20 : x
  2. Step 2: Convert to fraction form
    31,201.20/46,801.80 = 13,705.20/x
  3. Step 3: Cross multiply
    31,201.20x = 46,801.80 × 13,705.20
  4. Step 4: Simplify right side
    31,201.20x = 641,428,029.36
  5. Step 5: Solve for x
    x = 641,428,029.36/31,201.20
  6. Step 6: Final answer
    x = 20,557.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.