Home / 20,591.73-28,399.68-12,628.35

Finding the Fourth Proportional to 20,591.73, 28,399.68 and 12,628.35

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Solution

The fourth proportional to 20,591.73, 28,399.68 and 12,628.35 is: 17,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.73 : 28,399.68 = 12,628.35 : x
  2. Step 2: Convert to fraction form
    20,591.73/28,399.68 = 12,628.35/x
  3. Step 3: Cross multiply
    20,591.73x = 28,399.68 × 12,628.35
  4. Step 4: Simplify right side
    20,591.73x = 358,641,098.93
  5. Step 5: Solve for x
    x = 358,641,098.93/20,591.73
  6. Step 6: Final answer
    x = 17,416.75

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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.