Home / 12,206.54-18,309.81-3,440.31

Finding the Fourth Proportional to 12,206.54, 18,309.81 and 3,440.31

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Solution

The fourth proportional to 12,206.54, 18,309.81 and 3,440.31 is: 5,160.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.54 : 18,309.81 = 3,440.31 : x
  2. Step 2: Convert to fraction form
    12,206.54/18,309.81 = 3,440.31/x
  3. Step 3: Cross multiply
    12,206.54x = 18,309.81 × 3,440.31
  4. Step 4: Simplify right side
    12,206.54x = 62,991,422.44
  5. Step 5: Solve for x
    x = 62,991,422.44/12,206.54
  6. Step 6: Final answer
    x = 5,160.47

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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.