Home / 12,442.12-17,172.34-7,409.25

Finding the Fourth Proportional to 12,442.12, 17,172.34 and 7,409.25

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Solution

The fourth proportional to 12,442.12, 17,172.34 and 7,409.25 is: 10,226.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.12 : 17,172.34 = 7,409.25 : x
  2. Step 2: Convert to fraction form
    12,442.12/17,172.34 = 7,409.25/x
  3. Step 3: Cross multiply
    12,442.12x = 17,172.34 × 7,409.25
  4. Step 4: Simplify right side
    12,442.12x = 127,234,141.62
  5. Step 5: Solve for x
    x = 127,234,141.62/12,442.12
  6. Step 6: Final answer
    x = 10,226.08

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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.