Home / 28,972.09-43,464.91-8,980.54

Finding the Fourth Proportional to 28,972.09, 43,464.91 and 8,980.54

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Solution

The fourth proportional to 28,972.09, 43,464.91 and 8,980.54 is: 13,472.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.09 : 43,464.91 = 8,980.54 : x
  2. Step 2: Convert to fraction form
    28,972.09/43,464.91 = 8,980.54/x
  3. Step 3: Cross multiply
    28,972.09x = 43,464.91 × 8,980.54
  4. Step 4: Simplify right side
    28,972.09x = 390,338,231.74
  5. Step 5: Solve for x
    x = 390,338,231.74/28,972.09
  6. Step 6: Final answer
    x = 13,472.91

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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.