Home / 19,811.39-29,726.75-8,716.68

Finding the Fourth Proportional to 19,811.39, 29,726.75 and 8,716.68

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Solution

The fourth proportional to 19,811.39, 29,726.75 and 8,716.68 is: 13,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.39 : 29,726.75 = 8,716.68 : x
  2. Step 2: Convert to fraction form
    19,811.39/29,726.75 = 8,716.68/x
  3. Step 3: Cross multiply
    19,811.39x = 29,726.75 × 8,716.68
  4. Step 4: Simplify right side
    19,811.39x = 259,118,588.98
  5. Step 5: Solve for x
    x = 259,118,588.98/19,811.39
  6. Step 6: Final answer
    x = 13,079.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.