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Finding the Fourth Proportional to 12,907.15, 19,360.86 and 5,506.99

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Solution

The fourth proportional to 12,907.15, 19,360.86 and 5,506.99 is: 8,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.15 : 19,360.86 = 5,506.99 : x
  2. Step 2: Convert to fraction form
    12,907.15/19,360.86 = 5,506.99/x
  3. Step 3: Cross multiply
    12,907.15x = 19,360.86 × 5,506.99
  4. Step 4: Simplify right side
    12,907.15x = 106,620,062.41
  5. Step 5: Solve for x
    x = 106,620,062.41/12,907.15
  6. Step 6: Final answer
    x = 8,260.54

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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.