Home / 11,331.13-16,990.86-5,085.79

Finding the Fourth Proportional to 11,331.13, 16,990.86 and 5,085.79

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Solution

The fourth proportional to 11,331.13, 16,990.86 and 5,085.79 is: 7,626.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.13 : 16,990.86 = 5,085.79 : x
  2. Step 2: Convert to fraction form
    11,331.13/16,990.86 = 5,085.79/x
  3. Step 3: Cross multiply
    11,331.13x = 16,990.86 × 5,085.79
  4. Step 4: Simplify right side
    11,331.13x = 86,411,986.19
  5. Step 5: Solve for x
    x = 86,411,986.19/11,331.13
  6. Step 6: Final answer
    x = 7,626.07

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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.