Home / 13,868.96-19,138.17-7,899.53

Finding the Fourth Proportional to 13,868.96, 19,138.17 and 7,899.53

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Solution

The fourth proportional to 13,868.96, 19,138.17 and 7,899.53 is: 10,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.96 : 19,138.17 = 7,899.53 : x
  2. Step 2: Convert to fraction form
    13,868.96/19,138.17 = 7,899.53/x
  3. Step 3: Cross multiply
    13,868.96x = 19,138.17 × 7,899.53
  4. Step 4: Simplify right side
    13,868.96x = 151,182,481.99
  5. Step 5: Solve for x
    x = 151,182,481.99/13,868.96
  6. Step 6: Final answer
    x = 10,900.78

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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.