Home / 12,840.96-19,259.64-4,076.76

Finding the Fourth Proportional to 12,840.96, 19,259.64 and 4,076.76

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Solution

The fourth proportional to 12,840.96, 19,259.64 and 4,076.76 is: 6,114.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.96 : 19,259.64 = 4,076.76 : x
  2. Step 2: Convert to fraction form
    12,840.96/19,259.64 = 4,076.76/x
  3. Step 3: Cross multiply
    12,840.96x = 19,259.64 × 4,076.76
  4. Step 4: Simplify right side
    12,840.96x = 78,516,929.97
  5. Step 5: Solve for x
    x = 78,516,929.97/12,840.96
  6. Step 6: Final answer
    x = 6,114.57

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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.