Home / 20,948.25-28,909.09-11,516.83

Finding the Fourth Proportional to 20,948.25, 28,909.09 and 11,516.83

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Solution

The fourth proportional to 20,948.25, 28,909.09 and 11,516.83 is: 15,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.25 : 28,909.09 = 11,516.83 : x
  2. Step 2: Convert to fraction form
    20,948.25/28,909.09 = 11,516.83/x
  3. Step 3: Cross multiply
    20,948.25x = 28,909.09 × 11,516.83
  4. Step 4: Simplify right side
    20,948.25x = 332,940,959.23
  5. Step 5: Solve for x
    x = 332,940,959.23/20,948.25
  6. Step 6: Final answer
    x = 15,893.50

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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.