Home / 12,670.20-19,008.96-3,906.40

Finding the Fourth Proportional to 12,670.20, 19,008.96 and 3,906.40

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Solution

The fourth proportional to 12,670.20, 19,008.96 and 3,906.40 is: 5,860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.20 : 19,008.96 = 3,906.40 : x
  2. Step 2: Convert to fraction form
    12,670.20/19,008.96 = 3,906.40/x
  3. Step 3: Cross multiply
    12,670.20x = 19,008.96 × 3,906.40
  4. Step 4: Simplify right side
    12,670.20x = 74,256,601.34
  5. Step 5: Solve for x
    x = 74,256,601.34/12,670.20
  6. Step 6: Final answer
    x = 5,860.73

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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.