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Finding the Fourth Proportional to 12,133.89, 18,201.15 and 3,368.79

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Solution

The fourth proportional to 12,133.89, 18,201.15 and 3,368.79 is: 5,053.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,133.89 : 18,201.15 = 3,368.79 : x
  2. Step 2: Convert to fraction form
    12,133.89/18,201.15 = 3,368.79/x
  3. Step 3: Cross multiply
    12,133.89x = 18,201.15 × 3,368.79
  4. Step 4: Simplify right side
    12,133.89x = 61,315,852.11
  5. Step 5: Solve for x
    x = 61,315,852.11/12,133.89
  6. Step 6: Final answer
    x = 5,053.27

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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.