Home / 20,237.10-30,348.45-9,149.10

Finding the Fourth Proportional to 20,237.10, 30,348.45 and 9,149.10

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Solution

The fourth proportional to 20,237.10, 30,348.45 and 9,149.10 is: 13,720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.10 : 30,348.45 = 9,149.10 : x
  2. Step 2: Convert to fraction form
    20,237.10/30,348.45 = 9,149.10/x
  3. Step 3: Cross multiply
    20,237.10x = 30,348.45 × 9,149.10
  4. Step 4: Simplify right side
    20,237.10x = 277,661,003.90
  5. Step 5: Solve for x
    x = 277,661,003.90/20,237.10
  6. Step 6: Final answer
    x = 13,720.39

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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.