Home / 12,636.29-18,956.43-4,203.09

Finding the Fourth Proportional to 12,636.29, 18,956.43 and 4,203.09

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Solution

The fourth proportional to 12,636.29, 18,956.43 and 4,203.09 is: 6,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.29 : 18,956.43 = 4,203.09 : x
  2. Step 2: Convert to fraction form
    12,636.29/18,956.43 = 4,203.09/x
  3. Step 3: Cross multiply
    12,636.29x = 18,956.43 × 4,203.09
  4. Step 4: Simplify right side
    12,636.29x = 79,675,581.37
  5. Step 5: Solve for x
    x = 79,675,581.37/12,636.29
  6. Step 6: Final answer
    x = 6,305.30

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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.