Home / 20,170.40-30,223.20-14,921.60

Finding the Fourth Proportional to 20,170.40, 30,223.20 and 14,921.60

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Solution

The fourth proportional to 20,170.40, 30,223.20 and 14,921.60 is: 22,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.40 : 30,223.20 = 14,921.60 : x
  2. Step 2: Convert to fraction form
    20,170.40/30,223.20 = 14,921.60/x
  3. Step 3: Cross multiply
    20,170.40x = 30,223.20 × 14,921.60
  4. Step 4: Simplify right side
    20,170.40x = 450,978,501.12
  5. Step 5: Solve for x
    x = 450,978,501.12/20,170.40
  6. Step 6: Final answer
    x = 22,358.43

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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.