Home / 20,112.98-30,159.72-11,795.72

Finding the Fourth Proportional to 20,112.98, 30,159.72 and 11,795.72

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Solution

The fourth proportional to 20,112.98, 30,159.72 and 11,795.72 is: 17,687.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.98 : 30,159.72 = 11,795.72 : x
  2. Step 2: Convert to fraction form
    20,112.98/30,159.72 = 11,795.72/x
  3. Step 3: Cross multiply
    20,112.98x = 30,159.72 × 11,795.72
  4. Step 4: Simplify right side
    20,112.98x = 355,755,461.60
  5. Step 5: Solve for x
    x = 355,755,461.60/20,112.98
  6. Step 6: Final answer
    x = 17,687.86

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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.