Home / 13,072.55-18,040.49-8,039.72

Finding the Fourth Proportional to 13,072.55, 18,040.49 and 8,039.72

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Solution

The fourth proportional to 13,072.55, 18,040.49 and 8,039.72 is: 11,095.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.55 : 18,040.49 = 8,039.72 : x
  2. Step 2: Convert to fraction form
    13,072.55/18,040.49 = 8,039.72/x
  3. Step 3: Cross multiply
    13,072.55x = 18,040.49 × 8,039.72
  4. Step 4: Simplify right side
    13,072.55x = 145,040,357.86
  5. Step 5: Solve for x
    x = 145,040,357.86/13,072.55
  6. Step 6: Final answer
    x = 11,095.04

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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.