Home / 12,495.80-18,739.09-4,173.59

Finding the Fourth Proportional to 12,495.80, 18,739.09 and 4,173.59

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Solution

The fourth proportional to 12,495.80, 18,739.09 and 4,173.59 is: 6,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.80 : 18,739.09 = 4,173.59 : x
  2. Step 2: Convert to fraction form
    12,495.80/18,739.09 = 4,173.59/x
  3. Step 3: Cross multiply
    12,495.80x = 18,739.09 × 4,173.59
  4. Step 4: Simplify right side
    12,495.80x = 78,209,278.63
  5. Step 5: Solve for x
    x = 78,209,278.63/12,495.80
  6. Step 6: Final answer
    x = 6,258.85

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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.