Home / 21,269.36-29,347.44-12,881

Finding the Fourth Proportional to 21,269.36, 29,347.44 and 12,881

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Solution

The fourth proportional to 21,269.36, 29,347.44 and 12,881 is: 17,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.36 : 29,347.44 = 12,881 : x
  2. Step 2: Convert to fraction form
    21,269.36/29,347.44 = 12,881/x
  3. Step 3: Cross multiply
    21,269.36x = 29,347.44 × 12,881
  4. Step 4: Simplify right side
    21,269.36x = 378,024,374.64
  5. Step 5: Solve for x
    x = 378,024,374.64/21,269.36
  6. Step 6: Final answer
    x = 17,773.19

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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.