Home / 11,990.79-16,558.70-11,336.31

Finding the Fourth Proportional to 11,990.79, 16,558.70 and 11,336.31

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Solution

The fourth proportional to 11,990.79, 16,558.70 and 11,336.31 is: 15,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.79 : 16,558.70 = 11,336.31 : x
  2. Step 2: Convert to fraction form
    11,990.79/16,558.70 = 11,336.31/x
  3. Step 3: Cross multiply
    11,990.79x = 16,558.70 × 11,336.31
  4. Step 4: Simplify right side
    11,990.79x = 187,714,499.72
  5. Step 5: Solve for x
    x = 187,714,499.72/11,990.79
  6. Step 6: Final answer
    x = 15,654.89

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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.