Home / 8,726.19-13,021.86-7,791.72

Finding the Fourth Proportional to 8,726.19, 13,021.86 and 7,791.72

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Solution

The fourth proportional to 8,726.19, 13,021.86 and 7,791.72 is: 11,627.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.19 : 13,021.86 = 7,791.72 : x
  2. Step 2: Convert to fraction form
    8,726.19/13,021.86 = 7,791.72/x
  3. Step 3: Cross multiply
    8,726.19x = 13,021.86 × 7,791.72
  4. Step 4: Simplify right side
    8,726.19x = 101,462,687.00
  5. Step 5: Solve for x
    x = 101,462,687.00/8,726.19
  6. Step 6: Final answer
    x = 11,627.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.