Home / 13,072.66-18,042.89-7,766.45

Finding the Fourth Proportional to 13,072.66, 18,042.89 and 7,766.45

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Solution

The fourth proportional to 13,072.66, 18,042.89 and 7,766.45 is: 10,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.66 : 18,042.89 = 7,766.45 : x
  2. Step 2: Convert to fraction form
    13,072.66/18,042.89 = 7,766.45/x
  3. Step 3: Cross multiply
    13,072.66x = 18,042.89 × 7,766.45
  4. Step 4: Simplify right side
    13,072.66x = 140,129,203.04
  5. Step 5: Solve for x
    x = 140,129,203.04/13,072.66
  6. Step 6: Final answer
    x = 10,719.26

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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.