Home / 12,480.22-18,718.30-4,160.30

Finding the Fourth Proportional to 12,480.22, 18,718.30 and 4,160.30

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Solution

The fourth proportional to 12,480.22, 18,718.30 and 4,160.30 is: 6,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.22 : 18,718.30 = 4,160.30 : x
  2. Step 2: Convert to fraction form
    12,480.22/18,718.30 = 4,160.30/x
  3. Step 3: Cross multiply
    12,480.22x = 18,718.30 × 4,160.30
  4. Step 4: Simplify right side
    12,480.22x = 77,873,779.88
  5. Step 5: Solve for x
    x = 77,873,779.88/12,480.22
  6. Step 6: Final answer
    x = 6,239.78

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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.