Home / 20,130.31-30,205.50-9,044.92

Finding the Fourth Proportional to 20,130.31, 30,205.50 and 9,044.92

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Solution

The fourth proportional to 20,130.31, 30,205.50 and 9,044.92 is: 13,571.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.31 : 30,205.50 = 9,044.92 : x
  2. Step 2: Convert to fraction form
    20,130.31/30,205.50 = 9,044.92/x
  3. Step 3: Cross multiply
    20,130.31x = 30,205.50 × 9,044.92
  4. Step 4: Simplify right side
    20,130.31x = 273,206,331.06
  5. Step 5: Solve for x
    x = 273,206,331.06/20,130.31
  6. Step 6: Final answer
    x = 13,571.89

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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.