Home / 18,938.98-26,131.71-12,669.58

Finding the Fourth Proportional to 18,938.98, 26,131.71 and 12,669.58

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Solution

The fourth proportional to 18,938.98, 26,131.71 and 12,669.58 is: 17,481.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.98 : 26,131.71 = 12,669.58 : x
  2. Step 2: Convert to fraction form
    18,938.98/26,131.71 = 12,669.58/x
  3. Step 3: Cross multiply
    18,938.98x = 26,131.71 × 12,669.58
  4. Step 4: Simplify right side
    18,938.98x = 331,077,790.38
  5. Step 5: Solve for x
    x = 331,077,790.38/18,938.98
  6. Step 6: Final answer
    x = 17,481.29

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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.