Home / 20,894.21-31,352.08-13,879.07

Finding the Fourth Proportional to 20,894.21, 31,352.08 and 13,879.07

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Solution

The fourth proportional to 20,894.21, 31,352.08 and 13,879.07 is: 20,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.21 : 31,352.08 = 13,879.07 : x
  2. Step 2: Convert to fraction form
    20,894.21/31,352.08 = 13,879.07/x
  3. Step 3: Cross multiply
    20,894.21x = 31,352.08 × 13,879.07
  4. Step 4: Simplify right side
    20,894.21x = 435,137,712.97
  5. Step 5: Solve for x
    x = 435,137,712.97/20,894.21
  6. Step 6: Final answer
    x = 20,825.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.