Home / 31,078.78-46,611.45-8,886.20

Finding the Fourth Proportional to 31,078.78, 46,611.45 and 8,886.20

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Solution

The fourth proportional to 31,078.78, 46,611.45 and 8,886.20 is: 13,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,078.78 : 46,611.45 = 8,886.20 : x
  2. Step 2: Convert to fraction form
    31,078.78/46,611.45 = 8,886.20/x
  3. Step 3: Cross multiply
    31,078.78x = 46,611.45 × 8,886.20
  4. Step 4: Simplify right side
    31,078.78x = 414,198,433.93
  5. Step 5: Solve for x
    x = 414,198,433.93/31,078.78
  6. Step 6: Final answer
    x = 13,327.37

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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.