Home / 20,172.27-30,266.73-8,921.70

Finding the Fourth Proportional to 20,172.27, 30,266.73 and 8,921.70

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Solution

The fourth proportional to 20,172.27, 30,266.73 and 8,921.70 is: 13,386.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.27 : 30,266.73 = 8,921.70 : x
  2. Step 2: Convert to fraction form
    20,172.27/30,266.73 = 8,921.70/x
  3. Step 3: Cross multiply
    20,172.27x = 30,266.73 × 8,921.70
  4. Step 4: Simplify right side
    20,172.27x = 270,030,685.04
  5. Step 5: Solve for x
    x = 270,030,685.04/20,172.27
  6. Step 6: Final answer
    x = 13,386.23

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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.