Home / 13,857.38-19,122.27-7,889.66

Finding the Fourth Proportional to 13,857.38, 19,122.27 and 7,889.66

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Solution

The fourth proportional to 13,857.38, 19,122.27 and 7,889.66 is: 10,887.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.38 : 19,122.27 = 7,889.66 : x
  2. Step 2: Convert to fraction form
    13,857.38/19,122.27 = 7,889.66/x
  3. Step 3: Cross multiply
    13,857.38x = 19,122.27 × 7,889.66
  4. Step 4: Simplify right side
    13,857.38x = 150,868,208.73
  5. Step 5: Solve for x
    x = 150,868,208.73/13,857.38
  6. Step 6: Final answer
    x = 10,887.21

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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.