Home / 15,019.08-20,725.68-8,212.97

Finding the Fourth Proportional to 15,019.08, 20,725.68 and 8,212.97

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Solution

The fourth proportional to 15,019.08, 20,725.68 and 8,212.97 is: 11,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,019.08 : 20,725.68 = 8,212.97 : x
  2. Step 2: Convert to fraction form
    15,019.08/20,725.68 = 8,212.97/x
  3. Step 3: Cross multiply
    15,019.08x = 20,725.68 × 8,212.97
  4. Step 4: Simplify right side
    15,019.08x = 170,219,388.07
  5. Step 5: Solve for x
    x = 170,219,388.07/15,019.08
  6. Step 6: Final answer
    x = 11,333.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.