Home / 20,178.05-30,264.84-5,388.26

Finding the Fourth Proportional to 20,178.05, 30,264.84 and 5,388.26

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Solution

The fourth proportional to 20,178.05, 30,264.84 and 5,388.26 is: 8,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.05 : 30,264.84 = 5,388.26 : x
  2. Step 2: Convert to fraction form
    20,178.05/30,264.84 = 5,388.26/x
  3. Step 3: Cross multiply
    20,178.05x = 30,264.84 × 5,388.26
  4. Step 4: Simplify right side
    20,178.05x = 163,074,675.45
  5. Step 5: Solve for x
    x = 163,074,675.45/20,178.05
  6. Step 6: Final answer
    x = 8,081.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.