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Finding the Fourth Proportional to 13,493.53, 20,240.20 and 10,379.08

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Solution

The fourth proportional to 13,493.53, 20,240.20 and 10,379.08 is: 15,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,493.53 : 20,240.20 = 10,379.08 : x
  2. Step 2: Convert to fraction form
    13,493.53/20,240.20 = 10,379.08/x
  3. Step 3: Cross multiply
    13,493.53x = 20,240.20 × 10,379.08
  4. Step 4: Simplify right side
    13,493.53x = 210,074,655.02
  5. Step 5: Solve for x
    x = 210,074,655.02/13,493.53
  6. Step 6: Final answer
    x = 15,568.55

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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.