Home / 21,339.09-29,437.47-13,791.87

Finding the Fourth Proportional to 21,339.09, 29,437.47 and 13,791.87

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Solution

The fourth proportional to 21,339.09, 29,437.47 and 13,791.87 is: 19,026.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.09 : 29,437.47 = 13,791.87 : x
  2. Step 2: Convert to fraction form
    21,339.09/29,437.47 = 13,791.87/x
  3. Step 3: Cross multiply
    21,339.09x = 29,437.47 × 13,791.87
  4. Step 4: Simplify right side
    21,339.09x = 405,997,759.37
  5. Step 5: Solve for x
    x = 405,997,759.37/21,339.09
  6. Step 6: Final answer
    x = 19,026.01

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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.