Home / 20,679.28-30,994.08-9,570.88

Finding the Fourth Proportional to 20,679.28, 30,994.08 and 9,570.88

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Solution

The fourth proportional to 20,679.28, 30,994.08 and 9,570.88 is: 14,344.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.28 : 30,994.08 = 9,570.88 : x
  2. Step 2: Convert to fraction form
    20,679.28/30,994.08 = 9,570.88/x
  3. Step 3: Cross multiply
    20,679.28x = 30,994.08 × 9,570.88
  4. Step 4: Simplify right side
    20,679.28x = 296,640,620.39
  5. Step 5: Solve for x
    x = 296,640,620.39/20,679.28
  6. Step 6: Final answer
    x = 14,344.82

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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.