Home / 20,633.28-30,971.76-12,847.56

Finding the Fourth Proportional to 20,633.28, 30,971.76 and 12,847.56

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Solution

The fourth proportional to 20,633.28, 30,971.76 and 12,847.56 is: 19,284.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.28 : 30,971.76 = 12,847.56 : x
  2. Step 2: Convert to fraction form
    20,633.28/30,971.76 = 12,847.56/x
  3. Step 3: Cross multiply
    20,633.28x = 30,971.76 × 12,847.56
  4. Step 4: Simplify right side
    20,633.28x = 397,911,544.91
  5. Step 5: Solve for x
    x = 397,911,544.91/20,633.28
  6. Step 6: Final answer
    x = 19,284.94

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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.