Home / 12,942.02-19,408.55-6,274.64

Finding the Fourth Proportional to 12,942.02, 19,408.55 and 6,274.64

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Solution

The fourth proportional to 12,942.02, 19,408.55 and 6,274.64 is: 9,409.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.02 : 19,408.55 = 6,274.64 : x
  2. Step 2: Convert to fraction form
    12,942.02/19,408.55 = 6,274.64/x
  3. Step 3: Cross multiply
    12,942.02x = 19,408.55 × 6,274.64
  4. Step 4: Simplify right side
    12,942.02x = 121,781,728.38
  5. Step 5: Solve for x
    x = 121,781,728.38/12,942.02
  6. Step 6: Final answer
    x = 9,409.79

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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.