Home / 18,779.88-28,131.54-10,859.29

Finding the Fourth Proportional to 18,779.88, 28,131.54 and 10,859.29

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Solution

The fourth proportional to 18,779.88, 28,131.54 and 10,859.29 is: 16,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.88 : 28,131.54 = 10,859.29 : x
  2. Step 2: Convert to fraction form
    18,779.88/28,131.54 = 10,859.29/x
  3. Step 3: Cross multiply
    18,779.88x = 28,131.54 × 10,859.29
  4. Step 4: Simplify right side
    18,779.88x = 305,488,551.01
  5. Step 5: Solve for x
    x = 305,488,551.01/18,779.88
  6. Step 6: Final answer
    x = 16,266.80

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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.