Home / 13,726.36-18,935.40-8,682.08

Finding the Fourth Proportional to 13,726.36, 18,935.40 and 8,682.08

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Solution

The fourth proportional to 13,726.36, 18,935.40 and 8,682.08 is: 11,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.36 : 18,935.40 = 8,682.08 : x
  2. Step 2: Convert to fraction form
    13,726.36/18,935.40 = 8,682.08/x
  3. Step 3: Cross multiply
    13,726.36x = 18,935.40 × 8,682.08
  4. Step 4: Simplify right side
    13,726.36x = 164,398,657.63
  5. Step 5: Solve for x
    x = 164,398,657.63/13,726.36
  6. Step 6: Final answer
    x = 11,976.86

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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.