Home / 20,110.10-30,164.07-5,319.50

Finding the Fourth Proportional to 20,110.10, 30,164.07 and 5,319.50

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Solution

The fourth proportional to 20,110.10, 30,164.07 and 5,319.50 is: 7,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.10 : 30,164.07 = 5,319.50 : x
  2. Step 2: Convert to fraction form
    20,110.10/30,164.07 = 5,319.50/x
  3. Step 3: Cross multiply
    20,110.10x = 30,164.07 × 5,319.50
  4. Step 4: Simplify right side
    20,110.10x = 160,457,770.37
  5. Step 5: Solve for x
    x = 160,457,770.37/20,110.10
  6. Step 6: Final answer
    x = 7,978.96

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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.