Home / 20,659.56-30,983.81-8,970

Finding the Fourth Proportional to 20,659.56, 30,983.81 and 8,970

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Solution

The fourth proportional to 20,659.56, 30,983.81 and 8,970 is: 13,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.56 : 30,983.81 = 8,970 : x
  2. Step 2: Convert to fraction form
    20,659.56/30,983.81 = 8,970/x
  3. Step 3: Cross multiply
    20,659.56x = 30,983.81 × 8,970
  4. Step 4: Simplify right side
    20,659.56x = 277,924,730.85
  5. Step 5: Solve for x
    x = 277,924,730.85/20,659.56
  6. Step 6: Final answer
    x = 13,452.60

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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.