Home / 12,974.36-17,890.38-8,775.32

Finding the Fourth Proportional to 12,974.36, 17,890.38 and 8,775.32

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Solution

The fourth proportional to 12,974.36, 17,890.38 and 8,775.32 is: 12,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.36 : 17,890.38 = 8,775.32 : x
  2. Step 2: Convert to fraction form
    12,974.36/17,890.38 = 8,775.32/x
  3. Step 3: Cross multiply
    12,974.36x = 17,890.38 × 8,775.32
  4. Step 4: Simplify right side
    12,974.36x = 156,993,809.42
  5. Step 5: Solve for x
    x = 156,993,809.42/12,974.36
  6. Step 6: Final answer
    x = 12,100.31

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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.