Home / 20,678.31-28,536.17-11,246.94

Finding the Fourth Proportional to 20,678.31, 28,536.17 and 11,246.94

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Solution

The fourth proportional to 20,678.31, 28,536.17 and 11,246.94 is: 15,520.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.31 : 28,536.17 = 11,246.94 : x
  2. Step 2: Convert to fraction form
    20,678.31/28,536.17 = 11,246.94/x
  3. Step 3: Cross multiply
    20,678.31x = 28,536.17 × 11,246.94
  4. Step 4: Simplify right side
    20,678.31x = 320,944,535.59
  5. Step 5: Solve for x
    x = 320,944,535.59/20,678.31
  6. Step 6: Final answer
    x = 15,520.83

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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.