Home / 12,680.94-19,023.45-3,913.80

Finding the Fourth Proportional to 12,680.94, 19,023.45 and 3,913.80

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Solution

The fourth proportional to 12,680.94, 19,023.45 and 3,913.80 is: 5,871.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.94 : 19,023.45 = 3,913.80 : x
  2. Step 2: Convert to fraction form
    12,680.94/19,023.45 = 3,913.80/x
  3. Step 3: Cross multiply
    12,680.94x = 19,023.45 × 3,913.80
  4. Step 4: Simplify right side
    12,680.94x = 74,453,978.61
  5. Step 5: Solve for x
    x = 74,453,978.61/12,680.94
  6. Step 6: Final answer
    x = 5,871.33

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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.