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Finding the Fourth Proportional to 12,847.16, 19,241.10 and 12,403.95

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Solution

The fourth proportional to 12,847.16, 19,241.10 and 12,403.95 is: 18,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.16 : 19,241.10 = 12,403.95 : x
  2. Step 2: Convert to fraction form
    12,847.16/19,241.10 = 12,403.95/x
  3. Step 3: Cross multiply
    12,847.16x = 19,241.10 × 12,403.95
  4. Step 4: Simplify right side
    12,847.16x = 238,665,642.35
  5. Step 5: Solve for x
    x = 238,665,642.35/12,847.16
  6. Step 6: Final answer
    x = 18,577.31

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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.