Home / 21,605.24-32,403.72-9,121.16

Finding the Fourth Proportional to 21,605.24, 32,403.72 and 9,121.16

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Solution

The fourth proportional to 21,605.24, 32,403.72 and 9,121.16 is: 13,679.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.24 : 32,403.72 = 9,121.16 : x
  2. Step 2: Convert to fraction form
    21,605.24/32,403.72 = 9,121.16/x
  3. Step 3: Cross multiply
    21,605.24x = 32,403.72 × 9,121.16
  4. Step 4: Simplify right side
    21,605.24x = 295,559,514.72
  5. Step 5: Solve for x
    x = 295,559,514.72/21,605.24
  6. Step 6: Final answer
    x = 13,679.99

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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.