Home / 14,786.24-20,404.80-8,071.76

Finding the Fourth Proportional to 14,786.24, 20,404.80 and 8,071.76

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Solution

The fourth proportional to 14,786.24, 20,404.80 and 8,071.76 is: 11,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,786.24 : 20,404.80 = 8,071.76 : x
  2. Step 2: Convert to fraction form
    14,786.24/20,404.80 = 8,071.76/x
  3. Step 3: Cross multiply
    14,786.24x = 20,404.80 × 8,071.76
  4. Step 4: Simplify right side
    14,786.24x = 164,702,648.45
  5. Step 5: Solve for x
    x = 164,702,648.45/14,786.24
  6. Step 6: Final answer
    x = 11,138.91

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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.