Home / 14,486.40-19,991.34-8,198.64

Finding the Fourth Proportional to 14,486.40, 19,991.34 and 8,198.64

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Solution

The fourth proportional to 14,486.40, 19,991.34 and 8,198.64 is: 11,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.40 : 19,991.34 = 8,198.64 : x
  2. Step 2: Convert to fraction form
    14,486.40/19,991.34 = 8,198.64/x
  3. Step 3: Cross multiply
    14,486.40x = 19,991.34 × 8,198.64
  4. Step 4: Simplify right side
    14,486.40x = 163,901,799.78
  5. Step 5: Solve for x
    x = 163,901,799.78/14,486.40
  6. Step 6: Final answer
    x = 11,314.18

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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.