Home / 12,845.79-19,262.61-4,078.35

Finding the Fourth Proportional to 12,845.79, 19,262.61 and 4,078.35

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Solution

The fourth proportional to 12,845.79, 19,262.61 and 4,078.35 is: 6,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.79 : 19,262.61 = 4,078.35 : x
  2. Step 2: Convert to fraction form
    12,845.79/19,262.61 = 4,078.35/x
  3. Step 3: Cross multiply
    12,845.79x = 19,262.61 × 4,078.35
  4. Step 4: Simplify right side
    12,845.79x = 78,559,665.49
  5. Step 5: Solve for x
    x = 78,559,665.49/12,845.79
  6. Step 6: Final answer
    x = 6,115.60

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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.