Home / 21,832.39-30,126.90-12,880.27

Finding the Fourth Proportional to 21,832.39, 30,126.90 and 12,880.27

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Solution

The fourth proportional to 21,832.39, 30,126.90 and 12,880.27 is: 17,773.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.39 : 30,126.90 = 12,880.27 : x
  2. Step 2: Convert to fraction form
    21,832.39/30,126.90 = 12,880.27/x
  3. Step 3: Cross multiply
    21,832.39x = 30,126.90 × 12,880.27
  4. Step 4: Simplify right side
    21,832.39x = 388,042,606.26
  5. Step 5: Solve for x
    x = 388,042,606.26/21,832.39
  6. Step 6: Final answer
    x = 17,773.71

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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.