Home / 19,016.80-28,531.95-8,485.86

Finding the Fourth Proportional to 19,016.80, 28,531.95 and 8,485.86

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Solution

The fourth proportional to 19,016.80, 28,531.95 and 8,485.86 is: 12,731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,016.80 : 28,531.95 = 8,485.86 : x
  2. Step 2: Convert to fraction form
    19,016.80/28,531.95 = 8,485.86/x
  3. Step 3: Cross multiply
    19,016.80x = 28,531.95 × 8,485.86
  4. Step 4: Simplify right side
    19,016.80x = 242,118,165.05
  5. Step 5: Solve for x
    x = 242,118,165.05/19,016.80
  6. Step 6: Final answer
    x = 12,731.81

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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.