Home / 21,419.48-29,558.87-11,988.04

Finding the Fourth Proportional to 21,419.48, 29,558.87 and 11,988.04

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Solution

The fourth proportional to 21,419.48, 29,558.87 and 11,988.04 is: 16,543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.48 : 29,558.87 = 11,988.04 : x
  2. Step 2: Convert to fraction form
    21,419.48/29,558.87 = 11,988.04/x
  3. Step 3: Cross multiply
    21,419.48x = 29,558.87 × 11,988.04
  4. Step 4: Simplify right side
    21,419.48x = 354,352,949.89
  5. Step 5: Solve for x
    x = 354,352,949.89/21,419.48
  6. Step 6: Final answer
    x = 16,543.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.