Home / 13,868.56-19,136.47-7,899.47

Finding the Fourth Proportional to 13,868.56, 19,136.47 and 7,899.47

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Solution

The fourth proportional to 13,868.56, 19,136.47 and 7,899.47 is: 10,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.56 : 19,136.47 = 7,899.47 : x
  2. Step 2: Convert to fraction form
    13,868.56/19,136.47 = 7,899.47/x
  3. Step 3: Cross multiply
    13,868.56x = 19,136.47 × 7,899.47
  4. Step 4: Simplify right side
    13,868.56x = 151,167,835.49
  5. Step 5: Solve for x
    x = 151,167,835.49/13,868.56
  6. Step 6: Final answer
    x = 10,900.04

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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.