Home / 13,086.28-18,054.12-8,362.36

Finding the Fourth Proportional to 13,086.28, 18,054.12 and 8,362.36

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Solution

The fourth proportional to 13,086.28, 18,054.12 and 8,362.36 is: 11,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.28 : 18,054.12 = 8,362.36 : x
  2. Step 2: Convert to fraction form
    13,086.28/18,054.12 = 8,362.36/x
  3. Step 3: Cross multiply
    13,086.28x = 18,054.12 × 8,362.36
  4. Step 4: Simplify right side
    13,086.28x = 150,975,050.92
  5. Step 5: Solve for x
    x = 150,975,050.92/13,086.28
  6. Step 6: Final answer
    x = 11,536.90

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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.