Home / 13,921.53-20,880.09-4,561.53

Finding the Fourth Proportional to 13,921.53, 20,880.09 and 4,561.53

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Solution

The fourth proportional to 13,921.53, 20,880.09 and 4,561.53 is: 6,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.53 : 20,880.09 = 4,561.53 : x
  2. Step 2: Convert to fraction form
    13,921.53/20,880.09 = 4,561.53/x
  3. Step 3: Cross multiply
    13,921.53x = 20,880.09 × 4,561.53
  4. Step 4: Simplify right side
    13,921.53x = 95,245,156.94
  5. Step 5: Solve for x
    x = 95,245,156.94/13,921.53
  6. Step 6: Final answer
    x = 6,841.57

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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.