Home / 12,431.34-18,647.62-4,112.10

Finding the Fourth Proportional to 12,431.34, 18,647.62 and 4,112.10

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Solution

The fourth proportional to 12,431.34, 18,647.62 and 4,112.10 is: 6,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.34 : 18,647.62 = 4,112.10 : x
  2. Step 2: Convert to fraction form
    12,431.34/18,647.62 = 4,112.10/x
  3. Step 3: Cross multiply
    12,431.34x = 18,647.62 × 4,112.10
  4. Step 4: Simplify right side
    12,431.34x = 76,680,878.20
  5. Step 5: Solve for x
    x = 76,680,878.20/12,431.34
  6. Step 6: Final answer
    x = 6,168.35

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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.