Home / 12,670.45-17,480.96-8,199.86

Finding the Fourth Proportional to 12,670.45, 17,480.96 and 8,199.86

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Solution

The fourth proportional to 12,670.45, 17,480.96 and 8,199.86 is: 11,313.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.45 : 17,480.96 = 8,199.86 : x
  2. Step 2: Convert to fraction form
    12,670.45/17,480.96 = 8,199.86/x
  3. Step 3: Cross multiply
    12,670.45x = 17,480.96 × 8,199.86
  4. Step 4: Simplify right side
    12,670.45x = 143,341,424.67
  5. Step 5: Solve for x
    x = 143,341,424.67/12,670.45
  6. Step 6: Final answer
    x = 11,313.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.