Home / 12,840.89-19,261.27-4,076.48

Finding the Fourth Proportional to 12,840.89, 19,261.27 and 4,076.48

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Solution

The fourth proportional to 12,840.89, 19,261.27 and 4,076.48 is: 6,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.89 : 19,261.27 = 4,076.48 : x
  2. Step 2: Convert to fraction form
    12,840.89/19,261.27 = 4,076.48/x
  3. Step 3: Cross multiply
    12,840.89x = 19,261.27 × 4,076.48
  4. Step 4: Simplify right side
    12,840.89x = 78,518,181.93
  5. Step 5: Solve for x
    x = 78,518,181.93/12,840.89
  6. Step 6: Final answer
    x = 6,114.70

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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.