Home / 19,285.85-28,940.27-8,611.38

Finding the Fourth Proportional to 19,285.85, 28,940.27 and 8,611.38

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Solution

The fourth proportional to 19,285.85, 28,940.27 and 8,611.38 is: 12,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.85 : 28,940.27 = 8,611.38 : x
  2. Step 2: Convert to fraction form
    19,285.85/28,940.27 = 8,611.38/x
  3. Step 3: Cross multiply
    19,285.85x = 28,940.27 × 8,611.38
  4. Step 4: Simplify right side
    19,285.85x = 249,215,474.51
  5. Step 5: Solve for x
    x = 249,215,474.51/19,285.85
  6. Step 6: Final answer
    x = 12,922.20

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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.