Home / 19,085.05-28,631.73-7,986.03

Finding the Fourth Proportional to 19,085.05, 28,631.73 and 7,986.03

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Solution

The fourth proportional to 19,085.05, 28,631.73 and 7,986.03 is: 11,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,085.05 : 28,631.73 = 7,986.03 : x
  2. Step 2: Convert to fraction form
    19,085.05/28,631.73 = 7,986.03/x
  3. Step 3: Cross multiply
    19,085.05x = 28,631.73 × 7,986.03
  4. Step 4: Simplify right side
    19,085.05x = 228,653,671.64
  5. Step 5: Solve for x
    x = 228,653,671.64/19,085.05
  6. Step 6: Final answer
    x = 11,980.77

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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.