Home / 13,086.58-18,056.32-8,304.78

Finding the Fourth Proportional to 13,086.58, 18,056.32 and 8,304.78

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Solution

The fourth proportional to 13,086.58, 18,056.32 and 8,304.78 is: 11,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.58 : 18,056.32 = 8,304.78 : x
  2. Step 2: Convert to fraction form
    13,086.58/18,056.32 = 8,304.78/x
  3. Step 3: Cross multiply
    13,086.58x = 18,056.32 × 8,304.78
  4. Step 4: Simplify right side
    13,086.58x = 149,953,765.21
  5. Step 5: Solve for x
    x = 149,953,765.21/13,086.58
  6. Step 6: Final answer
    x = 11,458.59

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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.