Home / 13,349.76-18,416.96-8,634.56

Finding the Fourth Proportional to 13,349.76, 18,416.96 and 8,634.56

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Solution

The fourth proportional to 13,349.76, 18,416.96 and 8,634.56 is: 11,912.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.76 : 18,416.96 = 8,634.56 : x
  2. Step 2: Convert to fraction form
    13,349.76/18,416.96 = 8,634.56/x
  3. Step 3: Cross multiply
    13,349.76x = 18,416.96 × 8,634.56
  4. Step 4: Simplify right side
    13,349.76x = 159,022,346.14
  5. Step 5: Solve for x
    x = 159,022,346.14/13,349.76
  6. Step 6: Final answer
    x = 11,912.00

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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.