Home / 12,923.64-19,388.68-3,689.64

Finding the Fourth Proportional to 12,923.64, 19,388.68 and 3,689.64

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Solution

The fourth proportional to 12,923.64, 19,388.68 and 3,689.64 is: 5,535.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,923.64 : 19,388.68 = 3,689.64 : x
  2. Step 2: Convert to fraction form
    12,923.64/19,388.68 = 3,689.64/x
  3. Step 3: Cross multiply
    12,923.64x = 19,388.68 × 3,689.64
  4. Step 4: Simplify right side
    12,923.64x = 71,537,249.28
  5. Step 5: Solve for x
    x = 71,537,249.28/12,923.64
  6. Step 6: Final answer
    x = 5,535.38

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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.