Home / 20,265.06-30,390.30-8,579.10

Finding the Fourth Proportional to 20,265.06, 30,390.30 and 8,579.10

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Solution

The fourth proportional to 20,265.06, 30,390.30 and 8,579.10 is: 12,865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.06 : 30,390.30 = 8,579.10 : x
  2. Step 2: Convert to fraction form
    20,265.06/30,390.30 = 8,579.10/x
  3. Step 3: Cross multiply
    20,265.06x = 30,390.30 × 8,579.10
  4. Step 4: Simplify right side
    20,265.06x = 260,721,422.73
  5. Step 5: Solve for x
    x = 260,721,422.73/20,265.06
  6. Step 6: Final answer
    x = 12,865.56

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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.