Home / 20,178.77-30,265.65-5,388.84

Finding the Fourth Proportional to 20,178.77, 30,265.65 and 5,388.84

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Solution

The fourth proportional to 20,178.77, 30,265.65 and 5,388.84 is: 8,082.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.77 : 30,265.65 = 5,388.84 : x
  2. Step 2: Convert to fraction form
    20,178.77/30,265.65 = 5,388.84/x
  3. Step 3: Cross multiply
    20,178.77x = 30,265.65 × 5,388.84
  4. Step 4: Simplify right side
    20,178.77x = 163,096,745.35
  5. Step 5: Solve for x
    x = 163,096,745.35/20,178.77
  6. Step 6: Final answer
    x = 8,082.59

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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.