Home / 28,518.77-42,789.09-11,874.33

Finding the Fourth Proportional to 28,518.77, 42,789.09 and 11,874.33

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Solution

The fourth proportional to 28,518.77, 42,789.09 and 11,874.33 is: 17,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.77 : 42,789.09 = 11,874.33 : x
  2. Step 2: Convert to fraction form
    28,518.77/42,789.09 = 11,874.33/x
  3. Step 3: Cross multiply
    28,518.77x = 42,789.09 × 11,874.33
  4. Step 4: Simplify right side
    28,518.77x = 508,091,775.06
  5. Step 5: Solve for x
    x = 508,091,775.06/28,518.77
  6. Step 6: Final answer
    x = 17,816.05

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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.