Home / 12,639.48-17,442.36-6,974.28

Finding the Fourth Proportional to 12,639.48, 17,442.36 and 6,974.28

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Solution

The fourth proportional to 12,639.48, 17,442.36 and 6,974.28 is: 9,624.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.48 : 17,442.36 = 6,974.28 : x
  2. Step 2: Convert to fraction form
    12,639.48/17,442.36 = 6,974.28/x
  3. Step 3: Cross multiply
    12,639.48x = 17,442.36 × 6,974.28
  4. Step 4: Simplify right side
    12,639.48x = 121,647,902.50
  5. Step 5: Solve for x
    x = 121,647,902.50/12,639.48
  6. Step 6: Final answer
    x = 9,624.44

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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.