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Finding the Fourth Proportional to 13,994.95, 20,890.03 and 12,334.24

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Solution

The fourth proportional to 13,994.95, 20,890.03 and 12,334.24 is: 18,411.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.95 : 20,890.03 = 12,334.24 : x
  2. Step 2: Convert to fraction form
    13,994.95/20,890.03 = 12,334.24/x
  3. Step 3: Cross multiply
    13,994.95x = 20,890.03 × 12,334.24
  4. Step 4: Simplify right side
    13,994.95x = 257,662,643.63
  5. Step 5: Solve for x
    x = 257,662,643.63/13,994.95
  6. Step 6: Final answer
    x = 18,411.12

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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.