Home / 13,179.15-18,187.22-7,210.84

Finding the Fourth Proportional to 13,179.15, 18,187.22 and 7,210.84

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Solution

The fourth proportional to 13,179.15, 18,187.22 and 7,210.84 is: 9,950.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.15 : 18,187.22 = 7,210.84 : x
  2. Step 2: Convert to fraction form
    13,179.15/18,187.22 = 7,210.84/x
  3. Step 3: Cross multiply
    13,179.15x = 18,187.22 × 7,210.84
  4. Step 4: Simplify right side
    13,179.15x = 131,145,097.41
  5. Step 5: Solve for x
    x = 131,145,097.41/13,179.15
  6. Step 6: Final answer
    x = 9,950.95

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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.