Home / 20,636.52-28,477.82-11,205.08

Finding the Fourth Proportional to 20,636.52, 28,477.82 and 11,205.08

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Solution

The fourth proportional to 20,636.52, 28,477.82 and 11,205.08 is: 15,462.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.52 : 28,477.82 = 11,205.08 : x
  2. Step 2: Convert to fraction form
    20,636.52/28,477.82 = 11,205.08/x
  3. Step 3: Cross multiply
    20,636.52x = 28,477.82 × 11,205.08
  4. Step 4: Simplify right side
    20,636.52x = 319,096,251.33
  5. Step 5: Solve for x
    x = 319,096,251.33/20,636.52
  6. Step 6: Final answer
    x = 15,462.70

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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.