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Finding the Fourth Proportional to 13,994.88, 20,889.93 and 12,334.19

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Solution

The fourth proportional to 13,994.88, 20,889.93 and 12,334.19 is: 18,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.88 : 20,889.93 = 12,334.19 : x
  2. Step 2: Convert to fraction form
    13,994.88/20,889.93 = 12,334.19/x
  3. Step 3: Cross multiply
    13,994.88x = 20,889.93 × 12,334.19
  4. Step 4: Simplify right side
    13,994.88x = 257,660,261.26
  5. Step 5: Solve for x
    x = 257,660,261.26/13,994.88
  6. Step 6: Final answer
    x = 18,411.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.