Home / 22,331.48-30,820.66-13,379.36

Finding the Fourth Proportional to 22,331.48, 30,820.66 and 13,379.36

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Solution

The fourth proportional to 22,331.48, 30,820.66 and 13,379.36 is: 18,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,331.48 : 30,820.66 = 13,379.36 : x
  2. Step 2: Convert to fraction form
    22,331.48/30,820.66 = 13,379.36/x
  3. Step 3: Cross multiply
    22,331.48x = 30,820.66 × 13,379.36
  4. Step 4: Simplify right side
    22,331.48x = 412,360,705.58
  5. Step 5: Solve for x
    x = 412,360,705.58/22,331.48
  6. Step 6: Final answer
    x = 18,465.44

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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.