Home / 20,315.53-30,469.56-9,219.55

Finding the Fourth Proportional to 20,315.53, 30,469.56 and 9,219.55

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Solution

The fourth proportional to 20,315.53, 30,469.56 and 9,219.55 is: 13,827.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.53 : 30,469.56 = 9,219.55 : x
  2. Step 2: Convert to fraction form
    20,315.53/30,469.56 = 9,219.55/x
  3. Step 3: Cross multiply
    20,315.53x = 30,469.56 × 9,219.55
  4. Step 4: Simplify right side
    20,315.53x = 280,915,631.90
  5. Step 5: Solve for x
    x = 280,915,631.90/20,315.53
  6. Step 6: Final answer
    x = 13,827.63

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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.