Home / 20,171.76-30,259.84-5,381.12

Finding the Fourth Proportional to 20,171.76, 30,259.84 and 5,381.12

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Solution

The fourth proportional to 20,171.76, 30,259.84 and 5,381.12 is: 8,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.76 : 30,259.84 = 5,381.12 : x
  2. Step 2: Convert to fraction form
    20,171.76/30,259.84 = 5,381.12/x
  3. Step 3: Cross multiply
    20,171.76x = 30,259.84 × 5,381.12
  4. Step 4: Simplify right side
    20,171.76x = 162,831,830.22
  5. Step 5: Solve for x
    x = 162,831,830.22/20,171.76
  6. Step 6: Final answer
    x = 8,072.27

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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.