Home / 13,133.62-18,111.74-8,836.39

Finding the Fourth Proportional to 13,133.62, 18,111.74 and 8,836.39

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Solution

The fourth proportional to 13,133.62, 18,111.74 and 8,836.39 is: 12,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.62 : 18,111.74 = 8,836.39 : x
  2. Step 2: Convert to fraction form
    13,133.62/18,111.74 = 8,836.39/x
  3. Step 3: Cross multiply
    13,133.62x = 18,111.74 × 8,836.39
  4. Step 4: Simplify right side
    13,133.62x = 160,042,398.22
  5. Step 5: Solve for x
    x = 160,042,398.22/13,133.62
  6. Step 6: Final answer
    x = 12,185.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.