Home / 21,347.36-31,985.04-13,940.96

Finding the Fourth Proportional to 21,347.36, 31,985.04 and 13,940.96

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Solution

The fourth proportional to 21,347.36, 31,985.04 and 13,940.96 is: 20,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.36 : 31,985.04 = 13,940.96 : x
  2. Step 2: Convert to fraction form
    21,347.36/31,985.04 = 13,940.96/x
  3. Step 3: Cross multiply
    21,347.36x = 31,985.04 × 13,940.96
  4. Step 4: Simplify right side
    21,347.36x = 445,902,163.24
  5. Step 5: Solve for x
    x = 445,902,163.24/21,347.36
  6. Step 6: Final answer
    x = 20,887.93

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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.