Home / 20,765.70-31,153.32-5,974.74

Finding the Fourth Proportional to 20,765.70, 31,153.32 and 5,974.74

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Solution

The fourth proportional to 20,765.70, 31,153.32 and 5,974.74 is: 8,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.70 : 31,153.32 = 5,974.74 : x
  2. Step 2: Convert to fraction form
    20,765.70/31,153.32 = 5,974.74/x
  3. Step 3: Cross multiply
    20,765.70x = 31,153.32 × 5,974.74
  4. Step 4: Simplify right side
    20,765.70x = 186,132,987.14
  5. Step 5: Solve for x
    x = 186,132,987.14/20,765.70
  6. Step 6: Final answer
    x = 8,963.48

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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.