Home / 13,278.23-18,318.10-8,232.33

Finding the Fourth Proportional to 13,278.23, 18,318.10 and 8,232.33

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Solution

The fourth proportional to 13,278.23, 18,318.10 and 8,232.33 is: 11,356.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.23 : 18,318.10 = 8,232.33 : x
  2. Step 2: Convert to fraction form
    13,278.23/18,318.10 = 8,232.33/x
  3. Step 3: Cross multiply
    13,278.23x = 18,318.10 × 8,232.33
  4. Step 4: Simplify right side
    13,278.23x = 150,800,707.72
  5. Step 5: Solve for x
    x = 150,800,707.72/13,278.23
  6. Step 6: Final answer
    x = 11,356.99

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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.