Home / 13,343.88-18,414.68-9,316.56

Finding the Fourth Proportional to 13,343.88, 18,414.68 and 9,316.56

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Solution

The fourth proportional to 13,343.88, 18,414.68 and 9,316.56 is: 12,856.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.88 : 18,414.68 = 9,316.56 : x
  2. Step 2: Convert to fraction form
    13,343.88/18,414.68 = 9,316.56/x
  3. Step 3: Cross multiply
    13,343.88x = 18,414.68 × 9,316.56
  4. Step 4: Simplify right side
    13,343.88x = 171,561,471.10
  5. Step 5: Solve for x
    x = 171,561,471.10/13,343.88
  6. Step 6: Final answer
    x = 12,856.94

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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.