Home / 17,981.58-26,981.48-12,125.88

Finding the Fourth Proportional to 17,981.58, 26,981.48 and 12,125.88

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Solution

The fourth proportional to 17,981.58, 26,981.48 and 12,125.88 is: 18,194.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.58 : 26,981.48 = 12,125.88 : x
  2. Step 2: Convert to fraction form
    17,981.58/26,981.48 = 12,125.88/x
  3. Step 3: Cross multiply
    17,981.58x = 26,981.48 × 12,125.88
  4. Step 4: Simplify right side
    17,981.58x = 327,174,188.70
  5. Step 5: Solve for x
    x = 327,174,188.70/17,981.58
  6. Step 6: Final answer
    x = 18,194.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.