Home / 11,137.85-15,359.63-6,660.89

Finding the Fourth Proportional to 11,137.85, 15,359.63 and 6,660.89

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Solution

The fourth proportional to 11,137.85, 15,359.63 and 6,660.89 is: 9,185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.85 : 15,359.63 = 6,660.89 : x
  2. Step 2: Convert to fraction form
    11,137.85/15,359.63 = 6,660.89/x
  3. Step 3: Cross multiply
    11,137.85x = 15,359.63 × 6,660.89
  4. Step 4: Simplify right side
    11,137.85x = 102,308,695.77
  5. Step 5: Solve for x
    x = 102,308,695.77/11,137.85
  6. Step 6: Final answer
    x = 9,185.68

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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.