Home / 12,078.45-18,106.47-4,687.74

Finding the Fourth Proportional to 12,078.45, 18,106.47 and 4,687.74

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Solution

The fourth proportional to 12,078.45, 18,106.47 and 4,687.74 is: 7,027.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.45 : 18,106.47 = 4,687.74 : x
  2. Step 2: Convert to fraction form
    12,078.45/18,106.47 = 4,687.74/x
  3. Step 3: Cross multiply
    12,078.45x = 18,106.47 × 4,687.74
  4. Step 4: Simplify right side
    12,078.45x = 84,878,423.68
  5. Step 5: Solve for x
    x = 84,878,423.68/12,078.45
  6. Step 6: Final answer
    x = 7,027.26

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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.