Home / 20,255.76-30,381.48-7,108.56

Finding the Fourth Proportional to 20,255.76, 30,381.48 and 7,108.56

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Solution

The fourth proportional to 20,255.76, 30,381.48 and 7,108.56 is: 10,662.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.76 : 30,381.48 = 7,108.56 : x
  2. Step 2: Convert to fraction form
    20,255.76/30,381.48 = 7,108.56/x
  3. Step 3: Cross multiply
    20,255.76x = 30,381.48 × 7,108.56
  4. Step 4: Simplify right side
    20,255.76x = 215,968,573.47
  5. Step 5: Solve for x
    x = 215,968,573.47/20,255.76
  6. Step 6: Final answer
    x = 10,662.08

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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.