Home / 13,393.91-18,470.77-8,015.43

Finding the Fourth Proportional to 13,393.91, 18,470.77 and 8,015.43

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Solution

The fourth proportional to 13,393.91, 18,470.77 and 8,015.43 is: 11,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.91 : 18,470.77 = 8,015.43 : x
  2. Step 2: Convert to fraction form
    13,393.91/18,470.77 = 8,015.43/x
  3. Step 3: Cross multiply
    13,393.91x = 18,470.77 × 8,015.43
  4. Step 4: Simplify right side
    13,393.91x = 148,051,163.98
  5. Step 5: Solve for x
    x = 148,051,163.98/13,393.91
  6. Step 6: Final answer
    x = 11,053.62

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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.