Home / 14,220-21,329.76-11,731.68

Finding the Fourth Proportional to 14,220, 21,329.76 and 11,731.68

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Solution

The fourth proportional to 14,220, 21,329.76 and 11,731.68 is: 17,597.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220 : 21,329.76 = 11,731.68 : x
  2. Step 2: Convert to fraction form
    14,220/21,329.76 = 11,731.68/x
  3. Step 3: Cross multiply
    14,220x = 21,329.76 × 11,731.68
  4. Step 4: Simplify right side
    14,220x = 250,233,918.80
  5. Step 5: Solve for x
    x = 250,233,918.80/14,220
  6. Step 6: Final answer
    x = 17,597.32

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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.