Home / 11,133.12-15,365.44-6,418.88

Finding the Fourth Proportional to 11,133.12, 15,365.44 and 6,418.88

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Solution

The fourth proportional to 11,133.12, 15,365.44 and 6,418.88 is: 8,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.12 : 15,365.44 = 6,418.88 : x
  2. Step 2: Convert to fraction form
    11,133.12/15,365.44 = 6,418.88/x
  3. Step 3: Cross multiply
    11,133.12x = 15,365.44 × 6,418.88
  4. Step 4: Simplify right side
    11,133.12x = 98,628,915.51
  5. Step 5: Solve for x
    x = 98,628,915.51/11,133.12
  6. Step 6: Final answer
    x = 8,859.05

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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.