Home / 12,630.47-18,943.56-3,745.62

Finding the Fourth Proportional to 12,630.47, 18,943.56 and 3,745.62

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Solution

The fourth proportional to 12,630.47, 18,943.56 and 3,745.62 is: 5,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.47 : 18,943.56 = 3,745.62 : x
  2. Step 2: Convert to fraction form
    12,630.47/18,943.56 = 3,745.62/x
  3. Step 3: Cross multiply
    12,630.47x = 18,943.56 × 3,745.62
  4. Step 4: Simplify right side
    12,630.47x = 70,955,377.21
  5. Step 5: Solve for x
    x = 70,955,377.21/12,630.47
  6. Step 6: Final answer
    x = 5,617.80

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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.