Home / 21,683.66-29,926.68-13,187.17

Finding the Fourth Proportional to 21,683.66, 29,926.68 and 13,187.17

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Solution

The fourth proportional to 21,683.66, 29,926.68 and 13,187.17 is: 18,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,683.66 : 29,926.68 = 13,187.17 : x
  2. Step 2: Convert to fraction form
    21,683.66/29,926.68 = 13,187.17/x
  3. Step 3: Cross multiply
    21,683.66x = 29,926.68 × 13,187.17
  4. Step 4: Simplify right side
    21,683.66x = 394,648,067.06
  5. Step 5: Solve for x
    x = 394,648,067.06/21,683.66
  6. Step 6: Final answer
    x = 18,200.25

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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.