Home / 11,119.66-15,346.20-6,643.36

Finding the Fourth Proportional to 11,119.66, 15,346.20 and 6,643.36

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Solution

The fourth proportional to 11,119.66, 15,346.20 and 6,643.36 is: 9,168.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.66 : 15,346.20 = 6,643.36 : x
  2. Step 2: Convert to fraction form
    11,119.66/15,346.20 = 6,643.36/x
  3. Step 3: Cross multiply
    11,119.66x = 15,346.20 × 6,643.36
  4. Step 4: Simplify right side
    11,119.66x = 101,950,331.23
  5. Step 5: Solve for x
    x = 101,950,331.23/11,119.66
  6. Step 6: Final answer
    x = 9,168.48

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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.