Home / 20,647.24-28,493.16-11,215.73

Finding the Fourth Proportional to 20,647.24, 28,493.16 and 11,215.73

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Solution

The fourth proportional to 20,647.24, 28,493.16 and 11,215.73 is: 15,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.24 : 28,493.16 = 11,215.73 : x
  2. Step 2: Convert to fraction form
    20,647.24/28,493.16 = 11,215.73/x
  3. Step 3: Cross multiply
    20,647.24x = 28,493.16 × 11,215.73
  4. Step 4: Simplify right side
    20,647.24x = 319,571,589.41
  5. Step 5: Solve for x
    x = 319,571,589.41/20,647.24
  6. Step 6: Final answer
    x = 15,477.69

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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.