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Finding the Fourth Proportional to 19,294.54, 28,940.68 and 7,445.99

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Solution

The fourth proportional to 19,294.54, 28,940.68 and 7,445.99 is: 11,168.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.54 : 28,940.68 = 7,445.99 : x
  2. Step 2: Convert to fraction form
    19,294.54/28,940.68 = 7,445.99/x
  3. Step 3: Cross multiply
    19,294.54x = 28,940.68 × 7,445.99
  4. Step 4: Simplify right side
    19,294.54x = 215,492,032.49
  5. Step 5: Solve for x
    x = 215,492,032.49/19,294.54
  6. Step 6: Final answer
    x = 11,168.55

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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.