Home / 12,078.10-18,118.95-4,286.26

Finding the Fourth Proportional to 12,078.10, 18,118.95 and 4,286.26

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Solution

The fourth proportional to 12,078.10, 18,118.95 and 4,286.26 is: 6,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.10 : 18,118.95 = 4,286.26 : x
  2. Step 2: Convert to fraction form
    12,078.10/18,118.95 = 4,286.26/x
  3. Step 3: Cross multiply
    12,078.10x = 18,118.95 × 4,286.26
  4. Step 4: Simplify right side
    12,078.10x = 77,662,530.63
  5. Step 5: Solve for x
    x = 77,662,530.63/12,078.10
  6. Step 6: Final answer
    x = 6,430.03

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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.