Home / 20,678.24-28,536.27-11,246.83

Finding the Fourth Proportional to 20,678.24, 28,536.27 and 11,246.83

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Solution

The fourth proportional to 20,678.24, 28,536.27 and 11,246.83 is: 15,520.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.24 : 28,536.27 = 11,246.83 : x
  2. Step 2: Convert to fraction form
    20,678.24/28,536.27 = 11,246.83/x
  3. Step 3: Cross multiply
    20,678.24x = 28,536.27 × 11,246.83
  4. Step 4: Simplify right side
    20,678.24x = 320,942,577.52
  5. Step 5: Solve for x
    x = 320,942,577.52/20,678.24
  6. Step 6: Final answer
    x = 15,520.79

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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.