Home / 21,938.82-30,276.09-12,508.26

Finding the Fourth Proportional to 21,938.82, 30,276.09 and 12,508.26

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Solution

The fourth proportional to 21,938.82, 30,276.09 and 12,508.26 is: 17,261.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.82 : 30,276.09 = 12,508.26 : x
  2. Step 2: Convert to fraction form
    21,938.82/30,276.09 = 12,508.26/x
  3. Step 3: Cross multiply
    21,938.82x = 30,276.09 × 12,508.26
  4. Step 4: Simplify right side
    21,938.82x = 378,701,205.50
  5. Step 5: Solve for x
    x = 378,701,205.50/21,938.82
  6. Step 6: Final answer
    x = 17,261.69

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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.