Home / 13,509.88-20,268.70-4,151.26

Finding the Fourth Proportional to 13,509.88, 20,268.70 and 4,151.26

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Solution

The fourth proportional to 13,509.88, 20,268.70 and 4,151.26 is: 6,228.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.88 : 20,268.70 = 4,151.26 : x
  2. Step 2: Convert to fraction form
    13,509.88/20,268.70 = 4,151.26/x
  3. Step 3: Cross multiply
    13,509.88x = 20,268.70 × 4,151.26
  4. Step 4: Simplify right side
    13,509.88x = 84,140,643.56
  5. Step 5: Solve for x
    x = 84,140,643.56/13,509.88
  6. Step 6: Final answer
    x = 6,228.08

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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.