Home / 12,325.78-17,007.60-7,020.70

Finding the Fourth Proportional to 12,325.78, 17,007.60 and 7,020.70

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Solution

The fourth proportional to 12,325.78, 17,007.60 and 7,020.70 is: 9,687.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.78 : 17,007.60 = 7,020.70 : x
  2. Step 2: Convert to fraction form
    12,325.78/17,007.60 = 7,020.70/x
  3. Step 3: Cross multiply
    12,325.78x = 17,007.60 × 7,020.70
  4. Step 4: Simplify right side
    12,325.78x = 119,405,257.32
  5. Step 5: Solve for x
    x = 119,405,257.32/12,325.78
  6. Step 6: Final answer
    x = 9,687.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.