Home / 13,383.87-18,470.23-8,077.66

Finding the Fourth Proportional to 13,383.87, 18,470.23 and 8,077.66

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Solution

The fourth proportional to 13,383.87, 18,470.23 and 8,077.66 is: 11,147.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.87 : 18,470.23 = 8,077.66 : x
  2. Step 2: Convert to fraction form
    13,383.87/18,470.23 = 8,077.66/x
  3. Step 3: Cross multiply
    13,383.87x = 18,470.23 × 8,077.66
  4. Step 4: Simplify right side
    13,383.87x = 149,196,171.69
  5. Step 5: Solve for x
    x = 149,196,171.69/13,383.87
  6. Step 6: Final answer
    x = 11,147.46

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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.