Home / 15,274.09-21,049.72-11,911.60

Finding the Fourth Proportional to 15,274.09, 21,049.72 and 11,911.60

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Solution

The fourth proportional to 15,274.09, 21,049.72 and 11,911.60 is: 16,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.09 : 21,049.72 = 11,911.60 : x
  2. Step 2: Convert to fraction form
    15,274.09/21,049.72 = 11,911.60/x
  3. Step 3: Cross multiply
    15,274.09x = 21,049.72 × 11,911.60
  4. Step 4: Simplify right side
    15,274.09x = 250,735,844.75
  5. Step 5: Solve for x
    x = 250,735,844.75/15,274.09
  6. Step 6: Final answer
    x = 16,415.76

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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.