Home / 13,670.08-20,507.28-5,879.20

Finding the Fourth Proportional to 13,670.08, 20,507.28 and 5,879.20

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Solution

The fourth proportional to 13,670.08, 20,507.28 and 5,879.20 is: 8,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.08 : 20,507.28 = 5,879.20 : x
  2. Step 2: Convert to fraction form
    13,670.08/20,507.28 = 5,879.20/x
  3. Step 3: Cross multiply
    13,670.08x = 20,507.28 × 5,879.20
  4. Step 4: Simplify right side
    13,670.08x = 120,566,400.58
  5. Step 5: Solve for x
    x = 120,566,400.58/13,670.08
  6. Step 6: Final answer
    x = 8,819.73

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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.