Home / 20,749.87-31,097.13-11,375.74

Finding the Fourth Proportional to 20,749.87, 31,097.13 and 11,375.74

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Solution

The fourth proportional to 20,749.87, 31,097.13 and 11,375.74 is: 17,048.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.87 : 31,097.13 = 11,375.74 : x
  2. Step 2: Convert to fraction form
    20,749.87/31,097.13 = 11,375.74/x
  3. Step 3: Cross multiply
    20,749.87x = 31,097.13 × 11,375.74
  4. Step 4: Simplify right side
    20,749.87x = 353,752,865.63
  5. Step 5: Solve for x
    x = 353,752,865.63/20,749.87
  6. Step 6: Final answer
    x = 17,048.44

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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.