Home / 28,828.09-43,258.54-18,972.01

Finding the Fourth Proportional to 28,828.09, 43,258.54 and 18,972.01

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Solution

The fourth proportional to 28,828.09, 43,258.54 and 18,972.01 is: 28,468.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.09 : 43,258.54 = 18,972.01 : x
  2. Step 2: Convert to fraction form
    28,828.09/43,258.54 = 18,972.01/x
  3. Step 3: Cross multiply
    28,828.09x = 43,258.54 × 18,972.01
  4. Step 4: Simplify right side
    28,828.09x = 820,701,379.00
  5. Step 5: Solve for x
    x = 820,701,379.00/28,828.09
  6. Step 6: Final answer
    x = 28,468.81

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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.