Home / 18,740.97-28,111.73-8,208.81

Finding the Fourth Proportional to 18,740.97, 28,111.73 and 8,208.81

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Solution

The fourth proportional to 18,740.97, 28,111.73 and 8,208.81 is: 12,313.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.97 : 28,111.73 = 8,208.81 : x
  2. Step 2: Convert to fraction form
    18,740.97/28,111.73 = 8,208.81/x
  3. Step 3: Cross multiply
    18,740.97x = 28,111.73 × 8,208.81
  4. Step 4: Simplify right side
    18,740.97x = 230,763,809.30
  5. Step 5: Solve for x
    x = 230,763,809.30/18,740.97
  6. Step 6: Final answer
    x = 12,313.33

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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.