Home / 12,631.47-18,945.06-3,746.62

Finding the Fourth Proportional to 12,631.47, 18,945.06 and 3,746.62

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Solution

The fourth proportional to 12,631.47, 18,945.06 and 3,746.62 is: 5,619.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.47 : 18,945.06 = 3,746.62 : x
  2. Step 2: Convert to fraction form
    12,631.47/18,945.06 = 3,746.62/x
  3. Step 3: Cross multiply
    12,631.47x = 18,945.06 × 3,746.62
  4. Step 4: Simplify right side
    12,631.47x = 70,979,940.70
  5. Step 5: Solve for x
    x = 70,979,940.70/12,631.47
  6. Step 6: Final answer
    x = 5,619.29

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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.