Home / 20,439.83-30,653.27-8,749.91

Finding the Fourth Proportional to 20,439.83, 30,653.27 and 8,749.91

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Solution

The fourth proportional to 20,439.83, 30,653.27 and 8,749.91 is: 13,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.83 : 30,653.27 = 8,749.91 : x
  2. Step 2: Convert to fraction form
    20,439.83/30,653.27 = 8,749.91/x
  3. Step 3: Cross multiply
    20,439.83x = 30,653.27 × 8,749.91
  4. Step 4: Simplify right side
    20,439.83x = 268,213,309.96
  5. Step 5: Solve for x
    x = 268,213,309.96/20,439.83
  6. Step 6: Final answer
    x = 13,122.09

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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.