Home / 20,620.32-30,941.69-8,934.45

Finding the Fourth Proportional to 20,620.32, 30,941.69 and 8,934.45

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Solution

The fourth proportional to 20,620.32, 30,941.69 and 8,934.45 is: 13,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.32 : 30,941.69 = 8,934.45 : x
  2. Step 2: Convert to fraction form
    20,620.32/30,941.69 = 8,934.45/x
  3. Step 3: Cross multiply
    20,620.32x = 30,941.69 × 8,934.45
  4. Step 4: Simplify right side
    20,620.32x = 276,446,937.55
  5. Step 5: Solve for x
    x = 276,446,937.55/20,620.32
  6. Step 6: Final answer
    x = 13,406.53

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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.