Home / 20,153.46-30,230.10-7,670.55

Finding the Fourth Proportional to 20,153.46, 30,230.10 and 7,670.55

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Solution

The fourth proportional to 20,153.46, 30,230.10 and 7,670.55 is: 11,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.46 : 30,230.10 = 7,670.55 : x
  2. Step 2: Convert to fraction form
    20,153.46/30,230.10 = 7,670.55/x
  3. Step 3: Cross multiply
    20,153.46x = 30,230.10 × 7,670.55
  4. Step 4: Simplify right side
    20,153.46x = 231,881,493.56
  5. Step 5: Solve for x
    x = 231,881,493.56/20,153.46
  6. Step 6: Final answer
    x = 11,505.79

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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.