Home / 14,846.40-20,487.24-8,131.68

Finding the Fourth Proportional to 14,846.40, 20,487.24 and 8,131.68

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Solution

The fourth proportional to 14,846.40, 20,487.24 and 8,131.68 is: 11,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,846.40 : 20,487.24 = 8,131.68 : x
  2. Step 2: Convert to fraction form
    14,846.40/20,487.24 = 8,131.68/x
  3. Step 3: Cross multiply
    14,846.40x = 20,487.24 × 8,131.68
  4. Step 4: Simplify right side
    14,846.40x = 166,595,679.76
  5. Step 5: Solve for x
    x = 166,595,679.76/14,846.40
  6. Step 6: Final answer
    x = 11,221.28

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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.