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Finding the Fourth Proportional to 12,460.56, 18,690.78 and 11,837.64

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Solution

The fourth proportional to 12,460.56, 18,690.78 and 11,837.64 is: 17,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,460.56 : 18,690.78 = 11,837.64 : x
  2. Step 2: Convert to fraction form
    12,460.56/18,690.78 = 11,837.64/x
  3. Step 3: Cross multiply
    12,460.56x = 18,690.78 × 11,837.64
  4. Step 4: Simplify right side
    12,460.56x = 221,254,724.96
  5. Step 5: Solve for x
    x = 221,254,724.96/12,460.56
  6. Step 6: Final answer
    x = 17,756.40

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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.