Home / 13,889.28-19,167.12-7,515.84

Finding the Fourth Proportional to 13,889.28, 19,167.12 and 7,515.84

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Solution

The fourth proportional to 13,889.28, 19,167.12 and 7,515.84 is: 10,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.28 : 19,167.12 = 7,515.84 : x
  2. Step 2: Convert to fraction form
    13,889.28/19,167.12 = 7,515.84/x
  3. Step 3: Cross multiply
    13,889.28x = 19,167.12 × 7,515.84
  4. Step 4: Simplify right side
    13,889.28x = 144,057,007.18
  5. Step 5: Solve for x
    x = 144,057,007.18/13,889.28
  6. Step 6: Final answer
    x = 10,371.81

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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.