Home / 21,722.40-32,588.16-11,331.36

Finding the Fourth Proportional to 21,722.40, 32,588.16 and 11,331.36

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Solution

The fourth proportional to 21,722.40, 32,588.16 and 11,331.36 is: 16,999.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.40 : 32,588.16 = 11,331.36 : x
  2. Step 2: Convert to fraction form
    21,722.40/32,588.16 = 11,331.36/x
  3. Step 3: Cross multiply
    21,722.40x = 32,588.16 × 11,331.36
  4. Step 4: Simplify right side
    21,722.40x = 369,268,172.70
  5. Step 5: Solve for x
    x = 369,268,172.70/21,722.40
  6. Step 6: Final answer
    x = 16,999.42

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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.