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Finding the Fourth Proportional to 12,256.68, 18,394.26 and 8,978.16

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Solution

The fourth proportional to 12,256.68, 18,394.26 and 8,978.16 is: 13,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.68 : 18,394.26 = 8,978.16 : x
  2. Step 2: Convert to fraction form
    12,256.68/18,394.26 = 8,978.16/x
  3. Step 3: Cross multiply
    12,256.68x = 18,394.26 × 8,978.16
  4. Step 4: Simplify right side
    12,256.68x = 165,146,609.36
  5. Step 5: Solve for x
    x = 165,146,609.36/12,256.68
  6. Step 6: Final answer
    x = 13,474.01

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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.