Home / 22,550.40-31,119.66-13,119.30

Finding the Fourth Proportional to 22,550.40, 31,119.66 and 13,119.30

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Solution

The fourth proportional to 22,550.40, 31,119.66 and 13,119.30 is: 18,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,550.40 : 31,119.66 = 13,119.30 : x
  2. Step 2: Convert to fraction form
    22,550.40/31,119.66 = 13,119.30/x
  3. Step 3: Cross multiply
    22,550.40x = 31,119.66 × 13,119.30
  4. Step 4: Simplify right side
    22,550.40x = 408,268,155.44
  5. Step 5: Solve for x
    x = 408,268,155.44/22,550.40
  6. Step 6: Final answer
    x = 18,104.70

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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.