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Finding the Fourth Proportional to 31,099, 46,647.36 and 8,912.36

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Solution

The fourth proportional to 31,099, 46,647.36 and 8,912.36 is: 13,368.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,099 : 46,647.36 = 8,912.36 : x
  2. Step 2: Convert to fraction form
    31,099/46,647.36 = 8,912.36/x
  3. Step 3: Cross multiply
    31,099x = 46,647.36 × 8,912.36
  4. Step 4: Simplify right side
    31,099x = 415,738,065.37
  5. Step 5: Solve for x
    x = 415,738,065.37/31,099
  6. Step 6: Final answer
    x = 13,368.21

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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.