Home / 20,271.75-27,974.70-11,319.39

Finding the Fourth Proportional to 20,271.75, 27,974.70 and 11,319.39

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Solution

The fourth proportional to 20,271.75, 27,974.70 and 11,319.39 is: 15,620.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.75 : 27,974.70 = 11,319.39 : x
  2. Step 2: Convert to fraction form
    20,271.75/27,974.70 = 11,319.39/x
  3. Step 3: Cross multiply
    20,271.75x = 27,974.70 × 11,319.39
  4. Step 4: Simplify right side
    20,271.75x = 316,656,539.43
  5. Step 5: Solve for x
    x = 316,656,539.43/20,271.75
  6. Step 6: Final answer
    x = 15,620.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.