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Finding the Fourth Proportional to 19,291.95, 28,940.25 and 6,809.42

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Solution

The fourth proportional to 19,291.95, 28,940.25 and 6,809.42 is: 10,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,291.95 : 28,940.25 = 6,809.42 : x
  2. Step 2: Convert to fraction form
    19,291.95/28,940.25 = 6,809.42/x
  3. Step 3: Cross multiply
    19,291.95x = 28,940.25 × 6,809.42
  4. Step 4: Simplify right side
    19,291.95x = 197,066,172.45
  5. Step 5: Solve for x
    x = 197,066,172.45/19,291.95
  6. Step 6: Final answer
    x = 10,214.94

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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.