Home / 31,351.15-47,042.84-20,828.44

Finding the Fourth Proportional to 31,351.15, 47,042.84 and 20,828.44

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Solution

The fourth proportional to 31,351.15, 47,042.84 and 20,828.44 is: 31,253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,351.15 : 47,042.84 = 20,828.44 : x
  2. Step 2: Convert to fraction form
    31,351.15/47,042.84 = 20,828.44/x
  3. Step 3: Cross multiply
    31,351.15x = 47,042.84 × 20,828.44
  4. Step 4: Simplify right side
    31,351.15x = 979,828,970.37
  5. Step 5: Solve for x
    x = 979,828,970.37/31,351.15
  6. Step 6: Final answer
    x = 31,253.37

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1.5x scale

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.