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Finding the Fourth Proportional to 12,696.80, 19,042.28 and 4,800.16

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Solution

The fourth proportional to 12,696.80, 19,042.28 and 4,800.16 is: 7,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.80 : 19,042.28 = 4,800.16 : x
  2. Step 2: Convert to fraction form
    12,696.80/19,042.28 = 4,800.16/x
  3. Step 3: Cross multiply
    12,696.80x = 19,042.28 × 4,800.16
  4. Step 4: Simplify right side
    12,696.80x = 91,405,990.76
  5. Step 5: Solve for x
    x = 91,405,990.76/12,696.80
  6. Step 6: Final answer
    x = 7,199.14

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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.