Home / 15,218.94-21,002.34-8,504.88

Finding the Fourth Proportional to 15,218.94, 21,002.34 and 8,504.88

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Solution

The fourth proportional to 15,218.94, 21,002.34 and 8,504.88 is: 11,736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.94 : 21,002.34 = 8,504.88 : x
  2. Step 2: Convert to fraction form
    15,218.94/21,002.34 = 8,504.88/x
  3. Step 3: Cross multiply
    15,218.94x = 21,002.34 × 8,504.88
  4. Step 4: Simplify right side
    15,218.94x = 178,622,381.42
  5. Step 5: Solve for x
    x = 178,622,381.42/15,218.94
  6. Step 6: Final answer
    x = 11,736.85

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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.