Home / 19,990.75-27,589.67-11,607.25

Finding the Fourth Proportional to 19,990.75, 27,589.67 and 11,607.25

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Solution

The fourth proportional to 19,990.75, 27,589.67 and 11,607.25 is: 16,019.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.75 : 27,589.67 = 11,607.25 : x
  2. Step 2: Convert to fraction form
    19,990.75/27,589.67 = 11,607.25/x
  3. Step 3: Cross multiply
    19,990.75x = 27,589.67 × 11,607.25
  4. Step 4: Simplify right side
    19,990.75x = 320,240,197.11
  5. Step 5: Solve for x
    x = 320,240,197.11/19,990.75
  6. Step 6: Final answer
    x = 16,019.42

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Double scale
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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.