Home / 13,882.28-19,156.40-7,912.82

Finding the Fourth Proportional to 13,882.28, 19,156.40 and 7,912.82

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Solution

The fourth proportional to 13,882.28, 19,156.40 and 7,912.82 is: 10,919.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.28 : 19,156.40 = 7,912.82 : x
  2. Step 2: Convert to fraction form
    13,882.28/19,156.40 = 7,912.82/x
  3. Step 3: Cross multiply
    13,882.28x = 19,156.40 × 7,912.82
  4. Step 4: Simplify right side
    13,882.28x = 151,581,009.70
  5. Step 5: Solve for x
    x = 151,581,009.70/13,882.28
  6. Step 6: Final answer
    x = 10,919.03

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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.