Home / 13,280.27-18,318.69-8,176.61

Finding the Fourth Proportional to 13,280.27, 18,318.69 and 8,176.61

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Solution

The fourth proportional to 13,280.27, 18,318.69 and 8,176.61 is: 11,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.27 : 18,318.69 = 8,176.61 : x
  2. Step 2: Convert to fraction form
    13,280.27/18,318.69 = 8,176.61/x
  3. Step 3: Cross multiply
    13,280.27x = 18,318.69 × 8,176.61
  4. Step 4: Simplify right side
    13,280.27x = 149,784,783.84
  5. Step 5: Solve for x
    x = 149,784,783.84/13,280.27
  6. Step 6: Final answer
    x = 11,278.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.