Home / 19,172.75-28,734.89-8,631.54

Finding the Fourth Proportional to 19,172.75, 28,734.89 and 8,631.54

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Solution

The fourth proportional to 19,172.75, 28,734.89 and 8,631.54 is: 12,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.75 : 28,734.89 = 8,631.54 : x
  2. Step 2: Convert to fraction form
    19,172.75/28,734.89 = 8,631.54/x
  3. Step 3: Cross multiply
    19,172.75x = 28,734.89 × 8,631.54
  4. Step 4: Simplify right side
    19,172.75x = 248,026,309.27
  5. Step 5: Solve for x
    x = 248,026,309.27/19,172.75
  6. Step 6: Final answer
    x = 12,936.40

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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.