Home / 21,988.89-32,986.58-7,949.97

Finding the Fourth Proportional to 21,988.89, 32,986.58 and 7,949.97

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Solution

The fourth proportional to 21,988.89, 32,986.58 and 7,949.97 is: 11,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.89 : 32,986.58 = 7,949.97 : x
  2. Step 2: Convert to fraction form
    21,988.89/32,986.58 = 7,949.97/x
  3. Step 3: Cross multiply
    21,988.89x = 32,986.58 × 7,949.97
  4. Step 4: Simplify right side
    21,988.89x = 262,242,281.65
  5. Step 5: Solve for x
    x = 262,242,281.65/21,988.89
  6. Step 6: Final answer
    x = 11,926.13

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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.