Home / 20,136.51-30,208.04-6,810.79

Finding the Fourth Proportional to 20,136.51, 30,208.04 and 6,810.79

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Solution

The fourth proportional to 20,136.51, 30,208.04 and 6,810.79 is: 10,217.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.51 : 30,208.04 = 6,810.79 : x
  2. Step 2: Convert to fraction form
    20,136.51/30,208.04 = 6,810.79/x
  3. Step 3: Cross multiply
    20,136.51x = 30,208.04 × 6,810.79
  4. Step 4: Simplify right side
    20,136.51x = 205,740,616.75
  5. Step 5: Solve for x
    x = 205,740,616.75/20,136.51
  6. Step 6: Final answer
    x = 10,217.29

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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.