Home / 13,186.68-19,779.99-5,292.75

Finding the Fourth Proportional to 13,186.68, 19,779.99 and 5,292.75

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Solution

The fourth proportional to 13,186.68, 19,779.99 and 5,292.75 is: 7,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.68 : 19,779.99 = 5,292.75 : x
  2. Step 2: Convert to fraction form
    13,186.68/19,779.99 = 5,292.75/x
  3. Step 3: Cross multiply
    13,186.68x = 19,779.99 × 5,292.75
  4. Step 4: Simplify right side
    13,186.68x = 104,690,542.07
  5. Step 5: Solve for x
    x = 104,690,542.07/13,186.68
  6. Step 6: Final answer
    x = 7,939.11

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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.