Home / 15,039.78-20,754.57-8,233.79

Finding the Fourth Proportional to 15,039.78, 20,754.57 and 8,233.79

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Solution

The fourth proportional to 15,039.78, 20,754.57 and 8,233.79 is: 11,362.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.78 : 20,754.57 = 8,233.79 : x
  2. Step 2: Convert to fraction form
    15,039.78/20,754.57 = 8,233.79/x
  3. Step 3: Cross multiply
    15,039.78x = 20,754.57 × 8,233.79
  4. Step 4: Simplify right side
    15,039.78x = 170,888,667.15
  5. Step 5: Solve for x
    x = 170,888,667.15/15,039.78
  6. Step 6: Final answer
    x = 11,362.44

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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.