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Finding the Fourth Proportional to 18,394.41, 27,572.43 and 8,525.55

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Solution

The fourth proportional to 18,394.41, 27,572.43 and 8,525.55 is: 12,779.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.41 : 27,572.43 = 8,525.55 : x
  2. Step 2: Convert to fraction form
    18,394.41/27,572.43 = 8,525.55/x
  3. Step 3: Cross multiply
    18,394.41x = 27,572.43 × 8,525.55
  4. Step 4: Simplify right side
    18,394.41x = 235,070,130.59
  5. Step 5: Solve for x
    x = 235,070,130.59/18,394.41
  6. Step 6: Final answer
    x = 12,779.43

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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.