Home / 13,949.20-19,199.82-12,620.08

Finding the Fourth Proportional to 13,949.20, 19,199.82 and 12,620.08

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Solution

The fourth proportional to 13,949.20, 19,199.82 and 12,620.08 is: 17,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.20 : 19,199.82 = 12,620.08 : x
  2. Step 2: Convert to fraction form
    13,949.20/19,199.82 = 12,620.08/x
  3. Step 3: Cross multiply
    13,949.20x = 19,199.82 × 12,620.08
  4. Step 4: Simplify right side
    13,949.20x = 242,303,264.39
  5. Step 5: Solve for x
    x = 242,303,264.39/13,949.20
  6. Step 6: Final answer
    x = 17,370.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.