Home / 22,739.12-31,380.85-13,179.32

Finding the Fourth Proportional to 22,739.12, 31,380.85 and 13,179.32

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Solution

The fourth proportional to 22,739.12, 31,380.85 and 13,179.32 is: 18,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,739.12 : 31,380.85 = 13,179.32 : x
  2. Step 2: Convert to fraction form
    22,739.12/31,380.85 = 13,179.32/x
  3. Step 3: Cross multiply
    22,739.12x = 31,380.85 × 13,179.32
  4. Step 4: Simplify right side
    22,739.12x = 413,578,041.22
  5. Step 5: Solve for x
    x = 413,578,041.22/22,739.12
  6. Step 6: Final answer
    x = 18,187.96

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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.