Home / 20,829.24-31,256.82-7,684.56

Finding the Fourth Proportional to 20,829.24, 31,256.82 and 7,684.56

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Solution

The fourth proportional to 20,829.24, 31,256.82 and 7,684.56 is: 11,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.24 : 31,256.82 = 7,684.56 : x
  2. Step 2: Convert to fraction form
    20,829.24/31,256.82 = 7,684.56/x
  3. Step 3: Cross multiply
    20,829.24x = 31,256.82 × 7,684.56
  4. Step 4: Simplify right side
    20,829.24x = 240,194,908.70
  5. Step 5: Solve for x
    x = 240,194,908.70/20,829.24
  6. Step 6: Final answer
    x = 11,531.62

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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.