Home / 36,930.78-55,403.06-11,968.60

Finding the Fourth Proportional to 36,930.78, 55,403.06 and 11,968.60

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Solution

The fourth proportional to 36,930.78, 55,403.06 and 11,968.60 is: 17,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,930.78 : 55,403.06 = 11,968.60 : x
  2. Step 2: Convert to fraction form
    36,930.78/55,403.06 = 11,968.60/x
  3. Step 3: Cross multiply
    36,930.78x = 55,403.06 × 11,968.60
  4. Step 4: Simplify right side
    36,930.78x = 663,097,063.92
  5. Step 5: Solve for x
    x = 663,097,063.92/36,930.78
  6. Step 6: Final answer
    x = 17,955.13

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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.