Home / 19,289.80-28,928.46-6,139.09

Finding the Fourth Proportional to 19,289.80, 28,928.46 and 6,139.09

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Solution

The fourth proportional to 19,289.80, 28,928.46 and 6,139.09 is: 9,206.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.80 : 28,928.46 = 6,139.09 : x
  2. Step 2: Convert to fraction form
    19,289.80/28,928.46 = 6,139.09/x
  3. Step 3: Cross multiply
    19,289.80x = 28,928.46 × 6,139.09
  4. Step 4: Simplify right side
    19,289.80x = 177,594,419.50
  5. Step 5: Solve for x
    x = 177,594,419.50/19,289.80
  6. Step 6: Final answer
    x = 9,206.65

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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.