Home / 17,806.50-26,690.31-7,931.79

Finding the Fourth Proportional to 17,806.50, 26,690.31 and 7,931.79

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Solution

The fourth proportional to 17,806.50, 26,690.31 and 7,931.79 is: 11,889.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,806.50 : 26,690.31 = 7,931.79 : x
  2. Step 2: Convert to fraction form
    17,806.50/26,690.31 = 7,931.79/x
  3. Step 3: Cross multiply
    17,806.50x = 26,690.31 × 7,931.79
  4. Step 4: Simplify right side
    17,806.50x = 211,701,933.95
  5. Step 5: Solve for x
    x = 211,701,933.95/17,806.50
  6. Step 6: Final answer
    x = 11,889.03

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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.