Home / 13,623.80-18,800.24-7,959.08

Finding the Fourth Proportional to 13,623.80, 18,800.24 and 7,959.08

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Solution

The fourth proportional to 13,623.80, 18,800.24 and 7,959.08 is: 10,983.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.80 : 18,800.24 = 7,959.08 : x
  2. Step 2: Convert to fraction form
    13,623.80/18,800.24 = 7,959.08/x
  3. Step 3: Cross multiply
    13,623.80x = 18,800.24 × 7,959.08
  4. Step 4: Simplify right side
    13,623.80x = 149,632,540.08
  5. Step 5: Solve for x
    x = 149,632,540.08/13,623.80
  6. Step 6: Final answer
    x = 10,983.17

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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.