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Finding the Fourth Proportional to 19,047.78, 28,555.22 and 9,193.98

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Solution

The fourth proportional to 19,047.78, 28,555.22 and 9,193.98 is: 13,783.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,047.78 : 28,555.22 = 9,193.98 : x
  2. Step 2: Convert to fraction form
    19,047.78/28,555.22 = 9,193.98/x
  3. Step 3: Cross multiply
    19,047.78x = 28,555.22 × 9,193.98
  4. Step 4: Simplify right side
    19,047.78x = 262,536,121.58
  5. Step 5: Solve for x
    x = 262,536,121.58/19,047.78
  6. Step 6: Final answer
    x = 13,783.03

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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.