Home / 11,159.28-16,739.90-4,139.37

Finding the Fourth Proportional to 11,159.28, 16,739.90 and 4,139.37

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Solution

The fourth proportional to 11,159.28, 16,739.90 and 4,139.37 is: 6,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,159.28 : 16,739.90 = 4,139.37 : x
  2. Step 2: Convert to fraction form
    11,159.28/16,739.90 = 4,139.37/x
  3. Step 3: Cross multiply
    11,159.28x = 16,739.90 × 4,139.37
  4. Step 4: Simplify right side
    11,159.28x = 69,292,639.86
  5. Step 5: Solve for x
    x = 69,292,639.86/11,159.28
  6. Step 6: Final answer
    x = 6,209.42

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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.