Home / 13,912.84-20,748.47-13,136.86

Finding the Fourth Proportional to 13,912.84, 20,748.47 and 13,136.86

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Solution

The fourth proportional to 13,912.84, 20,748.47 and 13,136.86 is: 19,591.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.84 : 20,748.47 = 13,136.86 : x
  2. Step 2: Convert to fraction form
    13,912.84/20,748.47 = 13,136.86/x
  3. Step 3: Cross multiply
    13,912.84x = 20,748.47 × 13,136.86
  4. Step 4: Simplify right side
    13,912.84x = 272,569,745.60
  5. Step 5: Solve for x
    x = 272,569,745.60/13,912.84
  6. Step 6: Final answer
    x = 19,591.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.