Home / 11,687.13-17,520.26-4,289.87

Finding the Fourth Proportional to 11,687.13, 17,520.26 and 4,289.87

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Solution

The fourth proportional to 11,687.13, 17,520.26 and 4,289.87 is: 6,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.13 : 17,520.26 = 4,289.87 : x
  2. Step 2: Convert to fraction form
    11,687.13/17,520.26 = 4,289.87/x
  3. Step 3: Cross multiply
    11,687.13x = 17,520.26 × 4,289.87
  4. Step 4: Simplify right side
    11,687.13x = 75,159,637.77
  5. Step 5: Solve for x
    x = 75,159,637.77/11,687.13
  6. Step 6: Final answer
    x = 6,430.97

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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.