Home / 12,890.43-19,336.61-4,453.47

Finding the Fourth Proportional to 12,890.43, 19,336.61 and 4,453.47

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Solution

The fourth proportional to 12,890.43, 19,336.61 and 4,453.47 is: 6,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.43 : 19,336.61 = 4,453.47 : x
  2. Step 2: Convert to fraction form
    12,890.43/19,336.61 = 4,453.47/x
  3. Step 3: Cross multiply
    12,890.43x = 19,336.61 × 4,453.47
  4. Step 4: Simplify right side
    12,890.43x = 86,114,990.22
  5. Step 5: Solve for x
    x = 86,114,990.22/12,890.43
  6. Step 6: Final answer
    x = 6,680.54

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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.