Home / 20,155.69-27,813.13-11,200.33

Finding the Fourth Proportional to 20,155.69, 27,813.13 and 11,200.33

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Solution

The fourth proportional to 20,155.69, 27,813.13 and 11,200.33 is: 15,455.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.69 : 27,813.13 = 11,200.33 : x
  2. Step 2: Convert to fraction form
    20,155.69/27,813.13 = 11,200.33/x
  3. Step 3: Cross multiply
    20,155.69x = 27,813.13 × 11,200.33
  4. Step 4: Simplify right side
    20,155.69x = 311,516,234.33
  5. Step 5: Solve for x
    x = 311,516,234.33/20,155.69
  6. Step 6: Final answer
    x = 15,455.50

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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.