Home / 18,938.43-26,125.72-12,221.50

Finding the Fourth Proportional to 18,938.43, 26,125.72 and 12,221.50

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Solution

The fourth proportional to 18,938.43, 26,125.72 and 12,221.50 is: 16,859.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.43 : 26,125.72 = 12,221.50 : x
  2. Step 2: Convert to fraction form
    18,938.43/26,125.72 = 12,221.50/x
  3. Step 3: Cross multiply
    18,938.43x = 26,125.72 × 12,221.50
  4. Step 4: Simplify right side
    18,938.43x = 319,295,486.98
  5. Step 5: Solve for x
    x = 319,295,486.98/18,938.43
  6. Step 6: Final answer
    x = 16,859.66

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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.