Home / 13,192.85-19,783.12-7,647.78

Finding the Fourth Proportional to 13,192.85, 19,783.12 and 7,647.78

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Solution

The fourth proportional to 13,192.85, 19,783.12 and 7,647.78 is: 11,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,192.85 : 19,783.12 = 7,647.78 : x
  2. Step 2: Convert to fraction form
    13,192.85/19,783.12 = 7,647.78/x
  3. Step 3: Cross multiply
    13,192.85x = 19,783.12 × 7,647.78
  4. Step 4: Simplify right side
    13,192.85x = 151,296,967.68
  5. Step 5: Solve for x
    x = 151,296,967.68/13,192.85
  6. Step 6: Final answer
    x = 11,468.10

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1.5x scale

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.