Home / 18,795.09-28,181.70-7,109.22

Finding the Fourth Proportional to 18,795.09, 28,181.70 and 7,109.22

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Solution

The fourth proportional to 18,795.09, 28,181.70 and 7,109.22 is: 10,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.09 : 28,181.70 = 7,109.22 : x
  2. Step 2: Convert to fraction form
    18,795.09/28,181.70 = 7,109.22/x
  3. Step 3: Cross multiply
    18,795.09x = 28,181.70 × 7,109.22
  4. Step 4: Simplify right side
    18,795.09x = 200,350,037.61
  5. Step 5: Solve for x
    x = 200,350,037.61/18,795.09
  6. Step 6: Final answer
    x = 10,659.70

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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.