Home / 13,912.53-19,189.13-10,136.85

Finding the Fourth Proportional to 13,912.53, 19,189.13 and 10,136.85

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Solution

The fourth proportional to 13,912.53, 19,189.13 and 10,136.85 is: 13,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.53 : 19,189.13 = 10,136.85 : x
  2. Step 2: Convert to fraction form
    13,912.53/19,189.13 = 10,136.85/x
  3. Step 3: Cross multiply
    13,912.53x = 19,189.13 × 10,136.85
  4. Step 4: Simplify right side
    13,912.53x = 194,517,281.76
  5. Step 5: Solve for x
    x = 194,517,281.76/13,912.53
  6. Step 6: Final answer
    x = 13,981.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.