Home / 21,620.25-32,412.76-14,511.81

Finding the Fourth Proportional to 21,620.25, 32,412.76 and 14,511.81

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Solution

The fourth proportional to 21,620.25, 32,412.76 and 14,511.81 is: 21,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.25 : 32,412.76 = 14,511.81 : x
  2. Step 2: Convert to fraction form
    21,620.25/32,412.76 = 14,511.81/x
  3. Step 3: Cross multiply
    21,620.25x = 32,412.76 × 14,511.81
  4. Step 4: Simplify right side
    21,620.25x = 470,367,814.70
  5. Step 5: Solve for x
    x = 470,367,814.70/21,620.25
  6. Step 6: Final answer
    x = 21,755.89

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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.