Home / 20,687.51-31,024.31-6,644.09

Finding the Fourth Proportional to 20,687.51, 31,024.31 and 6,644.09

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Solution

The fourth proportional to 20,687.51, 31,024.31 and 6,644.09 is: 9,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.51 : 31,024.31 = 6,644.09 : x
  2. Step 2: Convert to fraction form
    20,687.51/31,024.31 = 6,644.09/x
  3. Step 3: Cross multiply
    20,687.51x = 31,024.31 × 6,644.09
  4. Step 4: Simplify right side
    20,687.51x = 206,128,352.17
  5. Step 5: Solve for x
    x = 206,128,352.17/20,687.51
  6. Step 6: Final answer
    x = 9,963.90

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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.