Home / 25,579.99-38,370.39-12,429.64

Finding the Fourth Proportional to 25,579.99, 38,370.39 and 12,429.64

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Solution

The fourth proportional to 25,579.99, 38,370.39 and 12,429.64 is: 18,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,579.99 : 38,370.39 = 12,429.64 : x
  2. Step 2: Convert to fraction form
    25,579.99/38,370.39 = 12,429.64/x
  3. Step 3: Cross multiply
    25,579.99x = 38,370.39 × 12,429.64
  4. Step 4: Simplify right side
    25,579.99x = 476,930,134.36
  5. Step 5: Solve for x
    x = 476,930,134.36/25,579.99
  6. Step 6: Final answer
    x = 18,644.66

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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.