Home / 13,617.09-18,791.73-7,648.47

Finding the Fourth Proportional to 13,617.09, 18,791.73 and 7,648.47

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Solution

The fourth proportional to 13,617.09, 18,791.73 and 7,648.47 is: 10,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.09 : 18,791.73 = 7,648.47 : x
  2. Step 2: Convert to fraction form
    13,617.09/18,791.73 = 7,648.47/x
  3. Step 3: Cross multiply
    13,617.09x = 18,791.73 × 7,648.47
  4. Step 4: Simplify right side
    13,617.09x = 143,727,983.15
  5. Step 5: Solve for x
    x = 143,727,983.15/13,617.09
  6. Step 6: Final answer
    x = 10,554.97

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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.