Home / 12,065.76-18,105.60-6,519.20

Finding the Fourth Proportional to 12,065.76, 18,105.60 and 6,519.20

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Solution

The fourth proportional to 12,065.76, 18,105.60 and 6,519.20 is: 9,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,065.76 : 18,105.60 = 6,519.20 : x
  2. Step 2: Convert to fraction form
    12,065.76/18,105.60 = 6,519.20/x
  3. Step 3: Cross multiply
    12,065.76x = 18,105.60 × 6,519.20
  4. Step 4: Simplify right side
    12,065.76x = 118,034,027.52
  5. Step 5: Solve for x
    x = 118,034,027.52/12,065.76
  6. Step 6: Final answer
    x = 9,782.56

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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.