Home / 28,578.04-42,873.92-11,928.80

Finding the Fourth Proportional to 28,578.04, 42,873.92 and 11,928.80

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Solution

The fourth proportional to 28,578.04, 42,873.92 and 11,928.80 is: 17,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.04 : 42,873.92 = 11,928.80 : x
  2. Step 2: Convert to fraction form
    28,578.04/42,873.92 = 11,928.80/x
  3. Step 3: Cross multiply
    28,578.04x = 42,873.92 × 11,928.80
  4. Step 4: Simplify right side
    28,578.04x = 511,434,416.90
  5. Step 5: Solve for x
    x = 511,434,416.90/28,578.04
  6. Step 6: Final answer
    x = 17,896.06

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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.