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Finding the Fourth Proportional to 12,683.98, 19,019.08 and 8,993.49

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Solution

The fourth proportional to 12,683.98, 19,019.08 and 8,993.49 is: 13,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,683.98 : 19,019.08 = 8,993.49 : x
  2. Step 2: Convert to fraction form
    12,683.98/19,019.08 = 8,993.49/x
  3. Step 3: Cross multiply
    12,683.98x = 19,019.08 × 8,993.49
  4. Step 4: Simplify right side
    12,683.98x = 171,047,905.79
  5. Step 5: Solve for x
    x = 171,047,905.79/12,683.98
  6. Step 6: Final answer
    x = 13,485.35

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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.