Home / 13,179.40-18,186.78-7,513.36

Finding the Fourth Proportional to 13,179.40, 18,186.78 and 7,513.36

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Solution

The fourth proportional to 13,179.40, 18,186.78 and 7,513.36 is: 10,367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.40 : 18,186.78 = 7,513.36 : x
  2. Step 2: Convert to fraction form
    13,179.40/18,186.78 = 7,513.36/x
  3. Step 3: Cross multiply
    13,179.40x = 18,186.78 × 7,513.36
  4. Step 4: Simplify right side
    13,179.40x = 136,643,825.38
  5. Step 5: Solve for x
    x = 136,643,825.38/13,179.40
  6. Step 6: Final answer
    x = 10,367.99

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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.