Home / 23,128.07-31,908.20-15,181.09

Finding the Fourth Proportional to 23,128.07, 31,908.20 and 15,181.09

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Solution

The fourth proportional to 23,128.07, 31,908.20 and 15,181.09 is: 20,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.07 : 31,908.20 = 15,181.09 : x
  2. Step 2: Convert to fraction form
    23,128.07/31,908.20 = 15,181.09/x
  3. Step 3: Cross multiply
    23,128.07x = 31,908.20 × 15,181.09
  4. Step 4: Simplify right side
    23,128.07x = 484,401,100.26
  5. Step 5: Solve for x
    x = 484,401,100.26/23,128.07
  6. Step 6: Final answer
    x = 20,944.30

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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.