Home / 13,072.16-18,042.42-8,040.70

Finding the Fourth Proportional to 13,072.16, 18,042.42 and 8,040.70

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Solution

The fourth proportional to 13,072.16, 18,042.42 and 8,040.70 is: 11,097.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.16 : 18,042.42 = 8,040.70 : x
  2. Step 2: Convert to fraction form
    13,072.16/18,042.42 = 8,040.70/x
  3. Step 3: Cross multiply
    13,072.16x = 18,042.42 × 8,040.70
  4. Step 4: Simplify right side
    13,072.16x = 145,073,686.49
  5. Step 5: Solve for x
    x = 145,073,686.49/13,072.16
  6. Step 6: Final answer
    x = 11,097.91

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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.