Home / 12,118.09-18,173.63-4,720.90

Finding the Fourth Proportional to 12,118.09, 18,173.63 and 4,720.90

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Solution

The fourth proportional to 12,118.09, 18,173.63 and 4,720.90 is: 7,079.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.09 : 18,173.63 = 4,720.90 : x
  2. Step 2: Convert to fraction form
    12,118.09/18,173.63 = 4,720.90/x
  3. Step 3: Cross multiply
    12,118.09x = 18,173.63 × 4,720.90
  4. Step 4: Simplify right side
    12,118.09x = 85,795,889.87
  5. Step 5: Solve for x
    x = 85,795,889.87/12,118.09
  6. Step 6: Final answer
    x = 7,079.98

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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.