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Finding the Fourth Proportional to 31,255.66, 46,883.70 and 12,787.66

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Solution

The fourth proportional to 31,255.66, 46,883.70 and 12,787.66 is: 19,181.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,255.66 : 46,883.70 = 12,787.66 : x
  2. Step 2: Convert to fraction form
    31,255.66/46,883.70 = 12,787.66/x
  3. Step 3: Cross multiply
    31,255.66x = 46,883.70 × 12,787.66
  4. Step 4: Simplify right side
    31,255.66x = 599,532,815.14
  5. Step 5: Solve for x
    x = 599,532,815.14/31,255.66
  6. Step 6: Final answer
    x = 19,181.58

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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.