Home / 12,485.14-18,724.47-4,988.39

Finding the Fourth Proportional to 12,485.14, 18,724.47 and 4,988.39

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Solution

The fourth proportional to 12,485.14, 18,724.47 and 4,988.39 is: 7,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.14 : 18,724.47 = 4,988.39 : x
  2. Step 2: Convert to fraction form
    12,485.14/18,724.47 = 4,988.39/x
  3. Step 3: Cross multiply
    12,485.14x = 18,724.47 × 4,988.39
  4. Step 4: Simplify right side
    12,485.14x = 93,404,846.57
  5. Step 5: Solve for x
    x = 93,404,846.57/12,485.14
  6. Step 6: Final answer
    x = 7,481.28

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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.