Home / 20,097.36-30,136.68-11,779.92

Finding the Fourth Proportional to 20,097.36, 30,136.68 and 11,779.92

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Solution

The fourth proportional to 20,097.36, 30,136.68 and 11,779.92 is: 17,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,097.36 : 30,136.68 = 11,779.92 : x
  2. Step 2: Convert to fraction form
    20,097.36/30,136.68 = 11,779.92/x
  3. Step 3: Cross multiply
    20,097.36x = 30,136.68 × 11,779.92
  4. Step 4: Simplify right side
    20,097.36x = 355,007,679.47
  5. Step 5: Solve for x
    x = 355,007,679.47/20,097.36
  6. Step 6: Final answer
    x = 17,664.39

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1.5x scale

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.