Home / 22,079.20-30,458.58-13,120.36

Finding the Fourth Proportional to 22,079.20, 30,458.58 and 13,120.36

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Solution

The fourth proportional to 22,079.20, 30,458.58 and 13,120.36 is: 18,099.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,079.20 : 30,458.58 = 13,120.36 : x
  2. Step 2: Convert to fraction form
    22,079.20/30,458.58 = 13,120.36/x
  3. Step 3: Cross multiply
    22,079.20x = 30,458.58 × 13,120.36
  4. Step 4: Simplify right side
    22,079.20x = 399,627,534.69
  5. Step 5: Solve for x
    x = 399,627,534.69/22,079.20
  6. Step 6: Final answer
    x = 18,099.73

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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.