Home / 22,120.20-30,535.74-13,170.84

Finding the Fourth Proportional to 22,120.20, 30,535.74 and 13,170.84

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Solution

The fourth proportional to 22,120.20, 30,535.74 and 13,170.84 is: 18,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,120.20 : 30,535.74 = 13,170.84 : x
  2. Step 2: Convert to fraction form
    22,120.20/30,535.74 = 13,170.84/x
  3. Step 3: Cross multiply
    22,120.20x = 30,535.74 × 13,170.84
  4. Step 4: Simplify right side
    22,120.20x = 402,181,345.82
  5. Step 5: Solve for x
    x = 402,181,345.82/22,120.20
  6. Step 6: Final answer
    x = 18,181.63

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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.