Home / 14,663.31-20,235.11-8,289.80

Finding the Fourth Proportional to 14,663.31, 20,235.11 and 8,289.80

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Solution

The fourth proportional to 14,663.31, 20,235.11 and 8,289.80 is: 11,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.31 : 20,235.11 = 8,289.80 : x
  2. Step 2: Convert to fraction form
    14,663.31/20,235.11 = 8,289.80/x
  3. Step 3: Cross multiply
    14,663.31x = 20,235.11 × 8,289.80
  4. Step 4: Simplify right side
    14,663.31x = 167,745,014.88
  5. Step 5: Solve for x
    x = 167,745,014.88/14,663.31
  6. Step 6: Final answer
    x = 11,439.78

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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.