Home / 20,738.30-31,107.20-14,627.30

Finding the Fourth Proportional to 20,738.30, 31,107.20 and 14,627.30

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Solution

The fourth proportional to 20,738.30, 31,107.20 and 14,627.30 is: 21,940.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.30 : 31,107.20 = 14,627.30 : x
  2. Step 2: Convert to fraction form
    20,738.30/31,107.20 = 14,627.30/x
  3. Step 3: Cross multiply
    20,738.30x = 31,107.20 × 14,627.30
  4. Step 4: Simplify right side
    20,738.30x = 455,014,346.56
  5. Step 5: Solve for x
    x = 455,014,346.56/20,738.30
  6. Step 6: Final answer
    x = 21,940.77

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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.