Home / 13,400.78-18,490.26-8,094.56

Finding the Fourth Proportional to 13,400.78, 18,490.26 and 8,094.56

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Solution

The fourth proportional to 13,400.78, 18,490.26 and 8,094.56 is: 11,168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.78 : 18,490.26 = 8,094.56 : x
  2. Step 2: Convert to fraction form
    13,400.78/18,490.26 = 8,094.56/x
  3. Step 3: Cross multiply
    13,400.78x = 18,490.26 × 8,094.56
  4. Step 4: Simplify right side
    13,400.78x = 149,670,518.99
  5. Step 5: Solve for x
    x = 149,670,518.99/13,400.78
  6. Step 6: Final answer
    x = 11,168.79

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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.