Home / 20,036.61-27,650.79-12,485.99

Finding the Fourth Proportional to 20,036.61, 27,650.79 and 12,485.99

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Solution

The fourth proportional to 20,036.61, 27,650.79 and 12,485.99 is: 17,230.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,036.61 : 27,650.79 = 12,485.99 : x
  2. Step 2: Convert to fraction form
    20,036.61/27,650.79 = 12,485.99/x
  3. Step 3: Cross multiply
    20,036.61x = 27,650.79 × 12,485.99
  4. Step 4: Simplify right side
    20,036.61x = 345,247,556.56
  5. Step 5: Solve for x
    x = 345,247,556.56/20,036.61
  6. Step 6: Final answer
    x = 17,230.84

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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.