Home / 21,762.72-30,036.48-12,329.28

Finding the Fourth Proportional to 21,762.72, 30,036.48 and 12,329.28

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Solution

The fourth proportional to 21,762.72, 30,036.48 and 12,329.28 is: 17,016.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.72 : 30,036.48 = 12,329.28 : x
  2. Step 2: Convert to fraction form
    21,762.72/30,036.48 = 12,329.28/x
  3. Step 3: Cross multiply
    21,762.72x = 30,036.48 × 12,329.28
  4. Step 4: Simplify right side
    21,762.72x = 370,328,172.13
  5. Step 5: Solve for x
    x = 370,328,172.13/21,762.72
  6. Step 6: Final answer
    x = 17,016.63

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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.