Home / 13,427.88-18,520.25-11,917.02

Finding the Fourth Proportional to 13,427.88, 18,520.25 and 11,917.02

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Solution

The fourth proportional to 13,427.88, 18,520.25 and 11,917.02 is: 16,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.88 : 18,520.25 = 11,917.02 : x
  2. Step 2: Convert to fraction form
    13,427.88/18,520.25 = 11,917.02/x
  3. Step 3: Cross multiply
    13,427.88x = 18,520.25 × 11,917.02
  4. Step 4: Simplify right side
    13,427.88x = 220,706,199.52
  5. Step 5: Solve for x
    x = 220,706,199.52/13,427.88
  6. Step 6: Final answer
    x = 16,436.42

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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.