Home / 12,076.50-18,112.80-3,309.36

Finding the Fourth Proportional to 12,076.50, 18,112.80 and 3,309.36

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Solution

The fourth proportional to 12,076.50, 18,112.80 and 3,309.36 is: 4,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,076.50 : 18,112.80 = 3,309.36 : x
  2. Step 2: Convert to fraction form
    12,076.50/18,112.80 = 3,309.36/x
  3. Step 3: Cross multiply
    12,076.50x = 18,112.80 × 3,309.36
  4. Step 4: Simplify right side
    12,076.50x = 59,941,775.81
  5. Step 5: Solve for x
    x = 59,941,775.81/12,076.50
  6. Step 6: Final answer
    x = 4,963.51

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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.