Home / 19,219.90-28,828.31-8,549.57

Finding the Fourth Proportional to 19,219.90, 28,828.31 and 8,549.57

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Solution

The fourth proportional to 19,219.90, 28,828.31 and 8,549.57 is: 12,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.90 : 28,828.31 = 8,549.57 : x
  2. Step 2: Convert to fraction form
    19,219.90/28,828.31 = 8,549.57/x
  3. Step 3: Cross multiply
    19,219.90x = 28,828.31 × 8,549.57
  4. Step 4: Simplify right side
    19,219.90x = 246,469,654.33
  5. Step 5: Solve for x
    x = 246,469,654.33/19,219.90
  6. Step 6: Final answer
    x = 12,823.67

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1.5x scale

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.