Home / 20,203.57-27,879.95-11,705.27

Finding the Fourth Proportional to 20,203.57, 27,879.95 and 11,705.27

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Solution

The fourth proportional to 20,203.57, 27,879.95 and 11,705.27 is: 16,152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.57 : 27,879.95 = 11,705.27 : x
  2. Step 2: Convert to fraction form
    20,203.57/27,879.95 = 11,705.27/x
  3. Step 3: Cross multiply
    20,203.57x = 27,879.95 × 11,705.27
  4. Step 4: Simplify right side
    20,203.57x = 326,342,283.81
  5. Step 5: Solve for x
    x = 326,342,283.81/20,203.57
  6. Step 6: Final answer
    x = 16,152.71

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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.