Home / 20,738.52-31,120.86-10,884.84

Finding the Fourth Proportional to 20,738.52, 31,120.86 and 10,884.84

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Solution

The fourth proportional to 20,738.52, 31,120.86 and 10,884.84 is: 16,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.52 : 31,120.86 = 10,884.84 : x
  2. Step 2: Convert to fraction form
    20,738.52/31,120.86 = 10,884.84/x
  3. Step 3: Cross multiply
    20,738.52x = 31,120.86 × 10,884.84
  4. Step 4: Simplify right side
    20,738.52x = 338,745,581.76
  5. Step 5: Solve for x
    x = 338,745,581.76/20,738.52
  6. Step 6: Final answer
    x = 16,334.13

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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.