Home / 20,759.34-31,119.85-8,276.34

Finding the Fourth Proportional to 20,759.34, 31,119.85 and 8,276.34

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Solution

The fourth proportional to 20,759.34, 31,119.85 and 8,276.34 is: 12,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.34 : 31,119.85 = 8,276.34 : x
  2. Step 2: Convert to fraction form
    20,759.34/31,119.85 = 8,276.34/x
  3. Step 3: Cross multiply
    20,759.34x = 31,119.85 × 8,276.34
  4. Step 4: Simplify right side
    20,759.34x = 257,558,539.84
  5. Step 5: Solve for x
    x = 257,558,539.84/20,759.34
  6. Step 6: Final answer
    x = 12,406.88

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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.