Home / 20,638.52-31,008.42-13,246.04

Finding the Fourth Proportional to 20,638.52, 31,008.42 and 13,246.04

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Solution

The fourth proportional to 20,638.52, 31,008.42 and 13,246.04 is: 19,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.52 : 31,008.42 = 13,246.04 : x
  2. Step 2: Convert to fraction form
    20,638.52/31,008.42 = 13,246.04/x
  3. Step 3: Cross multiply
    20,638.52x = 31,008.42 × 13,246.04
  4. Step 4: Simplify right side
    20,638.52x = 410,738,771.66
  5. Step 5: Solve for x
    x = 410,738,771.66/20,638.52
  6. Step 6: Final answer
    x = 19,901.56

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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.