Home / 13,561.34-20,343.83-12,741.21

Finding the Fourth Proportional to 13,561.34, 20,343.83 and 12,741.21

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Solution

The fourth proportional to 13,561.34, 20,343.83 and 12,741.21 is: 19,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.34 : 20,343.83 = 12,741.21 : x
  2. Step 2: Convert to fraction form
    13,561.34/20,343.83 = 12,741.21/x
  3. Step 3: Cross multiply
    13,561.34x = 20,343.83 × 12,741.21
  4. Step 4: Simplify right side
    13,561.34x = 259,204,946.53
  5. Step 5: Solve for x
    x = 259,204,946.53/13,561.34
  6. Step 6: Final answer
    x = 19,113.53

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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.