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Finding the Fourth Proportional to 18,391.12, 27,567.54 and 8,522.28

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Solution

The fourth proportional to 18,391.12, 27,567.54 and 8,522.28 is: 12,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.12 : 27,567.54 = 8,522.28 : x
  2. Step 2: Convert to fraction form
    18,391.12/27,567.54 = 8,522.28/x
  3. Step 3: Cross multiply
    18,391.12x = 27,567.54 × 8,522.28
  4. Step 4: Simplify right side
    18,391.12x = 234,938,294.79
  5. Step 5: Solve for x
    x = 234,938,294.79/18,391.12
  6. Step 6: Final answer
    x = 12,774.55

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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.