Home / 11,185.68-15,431.40-6,995.28

Finding the Fourth Proportional to 11,185.68, 15,431.40 and 6,995.28

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Solution

The fourth proportional to 11,185.68, 15,431.40 and 6,995.28 is: 9,650.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.68 : 15,431.40 = 6,995.28 : x
  2. Step 2: Convert to fraction form
    11,185.68/15,431.40 = 6,995.28/x
  3. Step 3: Cross multiply
    11,185.68x = 15,431.40 × 6,995.28
  4. Step 4: Simplify right side
    11,185.68x = 107,946,963.79
  5. Step 5: Solve for x
    x = 107,946,963.79/11,185.68
  6. Step 6: Final answer
    x = 9,650.46

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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.