Home / 13,444.30-18,550.47-8,139.61

Finding the Fourth Proportional to 13,444.30, 18,550.47 and 8,139.61

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Solution

The fourth proportional to 13,444.30, 18,550.47 and 8,139.61 is: 11,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,444.30 : 18,550.47 = 8,139.61 : x
  2. Step 2: Convert to fraction form
    13,444.30/18,550.47 = 8,139.61/x
  3. Step 3: Cross multiply
    13,444.30x = 18,550.47 × 8,139.61
  4. Step 4: Simplify right side
    13,444.30x = 150,993,498.36
  5. Step 5: Solve for x
    x = 150,993,498.36/13,444.30
  6. Step 6: Final answer
    x = 11,231.05

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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.