Home / 15,367.88-21,166.26-13,268.36

Finding the Fourth Proportional to 15,367.88, 21,166.26 and 13,268.36

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Solution

The fourth proportional to 15,367.88, 21,166.26 and 13,268.36 is: 18,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.88 : 21,166.26 = 13,268.36 : x
  2. Step 2: Convert to fraction form
    15,367.88/21,166.26 = 13,268.36/x
  3. Step 3: Cross multiply
    15,367.88x = 21,166.26 × 13,268.36
  4. Step 4: Simplify right side
    15,367.88x = 280,841,557.53
  5. Step 5: Solve for x
    x = 280,841,557.53/15,367.88
  6. Step 6: Final answer
    x = 18,274.58

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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.