Home / 20,104.85-30,158.71-5,313.44

Finding the Fourth Proportional to 20,104.85, 30,158.71 and 5,313.44

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Solution

The fourth proportional to 20,104.85, 30,158.71 and 5,313.44 is: 7,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.85 : 30,158.71 = 5,313.44 : x
  2. Step 2: Convert to fraction form
    20,104.85/30,158.71 = 5,313.44/x
  3. Step 3: Cross multiply
    20,104.85x = 30,158.71 × 5,313.44
  4. Step 4: Simplify right side
    20,104.85x = 160,246,496.06
  5. Step 5: Solve for x
    x = 160,246,496.06/20,104.85
  6. Step 6: Final answer
    x = 7,970.54

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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.