Home / 21,683.96-29,920.56-12,249.08

Finding the Fourth Proportional to 21,683.96, 29,920.56 and 12,249.08

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Solution

The fourth proportional to 21,683.96, 29,920.56 and 12,249.08 is: 16,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,683.96 : 29,920.56 = 12,249.08 : x
  2. Step 2: Convert to fraction form
    21,683.96/29,920.56 = 12,249.08/x
  3. Step 3: Cross multiply
    21,683.96x = 29,920.56 × 12,249.08
  4. Step 4: Simplify right side
    21,683.96x = 366,499,333.08
  5. Step 5: Solve for x
    x = 366,499,333.08/21,683.96
  6. Step 6: Final answer
    x = 16,901.86

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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.