Home / 14,789.32-20,408.90-8,074.79

Finding the Fourth Proportional to 14,789.32, 20,408.90 and 8,074.79

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Solution

The fourth proportional to 14,789.32, 20,408.90 and 8,074.79 is: 11,143.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.32 : 20,408.90 = 8,074.79 : x
  2. Step 2: Convert to fraction form
    14,789.32/20,408.90 = 8,074.79/x
  3. Step 3: Cross multiply
    14,789.32x = 20,408.90 × 8,074.79
  4. Step 4: Simplify right side
    14,789.32x = 164,797,515.75
  5. Step 5: Solve for x
    x = 164,797,515.75/14,789.32
  6. Step 6: Final answer
    x = 11,143.01

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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.