Home / 20,834.63-28,747.33-12,339.42

Finding the Fourth Proportional to 20,834.63, 28,747.33 and 12,339.42

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Solution

The fourth proportional to 20,834.63, 28,747.33 and 12,339.42 is: 17,025.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.63 : 28,747.33 = 12,339.42 : x
  2. Step 2: Convert to fraction form
    20,834.63/28,747.33 = 12,339.42/x
  3. Step 3: Cross multiply
    20,834.63x = 28,747.33 × 12,339.42
  4. Step 4: Simplify right side
    20,834.63x = 354,725,378.75
  5. Step 5: Solve for x
    x = 354,725,378.75/20,834.63
  6. Step 6: Final answer
    x = 17,025.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.