Home / 12,669.12-19,003.68-5,742

Finding the Fourth Proportional to 12,669.12, 19,003.68 and 5,742

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Solution

The fourth proportional to 12,669.12, 19,003.68 and 5,742 is: 8,613

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.12 : 19,003.68 = 5,742 : x
  2. Step 2: Convert to fraction form
    12,669.12/19,003.68 = 5,742/x
  3. Step 3: Cross multiply
    12,669.12x = 19,003.68 × 5,742
  4. Step 4: Simplify right side
    12,669.12x = 109,119,130.56
  5. Step 5: Solve for x
    x = 109,119,130.56/12,669.12
  6. Step 6: Final answer
    x = 8,613

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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.