Home / 17,981.91-26,986.98-12,474.01

Finding the Fourth Proportional to 17,981.91, 26,986.98 and 12,474.01

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Solution

The fourth proportional to 17,981.91, 26,986.98 and 12,474.01 is: 18,720.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.91 : 26,986.98 = 12,474.01 : x
  2. Step 2: Convert to fraction form
    17,981.91/26,986.98 = 12,474.01/x
  3. Step 3: Cross multiply
    17,981.91x = 26,986.98 × 12,474.01
  4. Step 4: Simplify right side
    17,981.91x = 336,635,858.39
  5. Step 5: Solve for x
    x = 336,635,858.39/17,981.91
  6. Step 6: Final answer
    x = 18,720.81

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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.