Home / 19,231.28-28,794.80-9,977.84

Finding the Fourth Proportional to 19,231.28, 28,794.80 and 9,977.84

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Solution

The fourth proportional to 19,231.28, 28,794.80 and 9,977.84 is: 14,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.28 : 28,794.80 = 9,977.84 : x
  2. Step 2: Convert to fraction form
    19,231.28/28,794.80 = 9,977.84/x
  3. Step 3: Cross multiply
    19,231.28x = 28,794.80 × 9,977.84
  4. Step 4: Simplify right side
    19,231.28x = 287,309,907.23
  5. Step 5: Solve for x
    x = 287,309,907.23/19,231.28
  6. Step 6: Final answer
    x = 14,939.72

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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.