Home / 13,879.53-20,806.74-5,108.31

Finding the Fourth Proportional to 13,879.53, 20,806.74 and 5,108.31

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Solution

The fourth proportional to 13,879.53, 20,806.74 and 5,108.31 is: 7,657.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.53 : 20,806.74 = 5,108.31 : x
  2. Step 2: Convert to fraction form
    13,879.53/20,806.74 = 5,108.31/x
  3. Step 3: Cross multiply
    13,879.53x = 20,806.74 × 5,108.31
  4. Step 4: Simplify right side
    13,879.53x = 106,287,278.01
  5. Step 5: Solve for x
    x = 106,287,278.01/13,879.53
  6. Step 6: Final answer
    x = 7,657.84

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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.