Home / 12,112.49-18,157.73-4,319.48

Finding the Fourth Proportional to 12,112.49, 18,157.73 and 4,319.48

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Solution

The fourth proportional to 12,112.49, 18,157.73 and 4,319.48 is: 6,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.49 : 18,157.73 = 4,319.48 : x
  2. Step 2: Convert to fraction form
    12,112.49/18,157.73 = 4,319.48/x
  3. Step 3: Cross multiply
    12,112.49x = 18,157.73 × 4,319.48
  4. Step 4: Simplify right side
    12,112.49x = 78,431,839.19
  5. Step 5: Solve for x
    x = 78,431,839.19/12,112.49
  6. Step 6: Final answer
    x = 6,475.29

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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.