Home / 19,209.50-28,823.16-8,118.78

Finding the Fourth Proportional to 19,209.50, 28,823.16 and 8,118.78

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Solution

The fourth proportional to 19,209.50, 28,823.16 and 8,118.78 is: 12,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.50 : 28,823.16 = 8,118.78 : x
  2. Step 2: Convert to fraction form
    19,209.50/28,823.16 = 8,118.78/x
  3. Step 3: Cross multiply
    19,209.50x = 28,823.16 × 8,118.78
  4. Step 4: Simplify right side
    19,209.50x = 234,008,817.30
  5. Step 5: Solve for x
    x = 234,008,817.30/19,209.50
  6. Step 6: Final answer
    x = 12,181.93

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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.