Home / 12,772.98-19,146.51-8,091.54

Finding the Fourth Proportional to 12,772.98, 19,146.51 and 8,091.54

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Solution

The fourth proportional to 12,772.98, 19,146.51 and 8,091.54 is: 12,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.98 : 19,146.51 = 8,091.54 : x
  2. Step 2: Convert to fraction form
    12,772.98/19,146.51 = 8,091.54/x
  3. Step 3: Cross multiply
    12,772.98x = 19,146.51 × 8,091.54
  4. Step 4: Simplify right side
    12,772.98x = 154,924,751.53
  5. Step 5: Solve for x
    x = 154,924,751.53/12,772.98
  6. Step 6: Final answer
    x = 12,129.10

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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.