Home / 21,811.26-30,099.47-12,249.84

Finding the Fourth Proportional to 21,811.26, 30,099.47 and 12,249.84

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Solution

The fourth proportional to 21,811.26, 30,099.47 and 12,249.84 is: 16,904.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.26 : 30,099.47 = 12,249.84 : x
  2. Step 2: Convert to fraction form
    21,811.26/30,099.47 = 12,249.84/x
  3. Step 3: Cross multiply
    21,811.26x = 30,099.47 × 12,249.84
  4. Step 4: Simplify right side
    21,811.26x = 368,713,630.34
  5. Step 5: Solve for x
    x = 368,713,630.34/21,811.26
  6. Step 6: Final answer
    x = 16,904.74

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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.