Home / 11,431.12-15,775.29-6,395.17

Finding the Fourth Proportional to 11,431.12, 15,775.29 and 6,395.17

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Solution

The fourth proportional to 11,431.12, 15,775.29 and 6,395.17 is: 8,825.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.12 : 15,775.29 = 6,395.17 : x
  2. Step 2: Convert to fraction form
    11,431.12/15,775.29 = 6,395.17/x
  3. Step 3: Cross multiply
    11,431.12x = 15,775.29 × 6,395.17
  4. Step 4: Simplify right side
    11,431.12x = 100,885,661.35
  5. Step 5: Solve for x
    x = 100,885,661.35/11,431.12
  6. Step 6: Final answer
    x = 8,825.53

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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.