Home / 20,620.56-30,930.84-11,444.88

Finding the Fourth Proportional to 20,620.56, 30,930.84 and 11,444.88

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Solution

The fourth proportional to 20,620.56, 30,930.84 and 11,444.88 is: 17,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.56 : 30,930.84 = 11,444.88 : x
  2. Step 2: Convert to fraction form
    20,620.56/30,930.84 = 11,444.88/x
  3. Step 3: Cross multiply
    20,620.56x = 30,930.84 × 11,444.88
  4. Step 4: Simplify right side
    20,620.56x = 353,999,752.10
  5. Step 5: Solve for x
    x = 353,999,752.10/20,620.56
  6. Step 6: Final answer
    x = 17,167.32

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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.