Home / 21,679.04-32,518.72-7,828

Finding the Fourth Proportional to 21,679.04, 32,518.72 and 7,828

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Solution

The fourth proportional to 21,679.04, 32,518.72 and 7,828 is: 11,742.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.04 : 32,518.72 = 7,828 : x
  2. Step 2: Convert to fraction form
    21,679.04/32,518.72 = 7,828/x
  3. Step 3: Cross multiply
    21,679.04x = 32,518.72 × 7,828
  4. Step 4: Simplify right side
    21,679.04x = 254,556,540.16
  5. Step 5: Solve for x
    x = 254,556,540.16/21,679.04
  6. Step 6: Final answer
    x = 11,742.06

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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.