Home / 20,311.53-30,463.56-9,215.55

Finding the Fourth Proportional to 20,311.53, 30,463.56 and 9,215.55

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Solution

The fourth proportional to 20,311.53, 30,463.56 and 9,215.55 is: 13,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.53 : 30,463.56 = 9,215.55 : x
  2. Step 2: Convert to fraction form
    20,311.53/30,463.56 = 9,215.55/x
  3. Step 3: Cross multiply
    20,311.53x = 30,463.56 × 9,215.55
  4. Step 4: Simplify right side
    20,311.53x = 280,738,460.36
  5. Step 5: Solve for x
    x = 280,738,460.36/20,311.53
  6. Step 6: Final answer
    x = 13,821.63

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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.