Home / 21,332.34-29,438.37-11,902.50

Finding the Fourth Proportional to 21,332.34, 29,438.37 and 11,902.50

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Solution

The fourth proportional to 21,332.34, 29,438.37 and 11,902.50 is: 16,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.34 : 29,438.37 = 11,902.50 : x
  2. Step 2: Convert to fraction form
    21,332.34/29,438.37 = 11,902.50/x
  3. Step 3: Cross multiply
    21,332.34x = 29,438.37 × 11,902.50
  4. Step 4: Simplify right side
    21,332.34x = 350,390,198.93
  5. Step 5: Solve for x
    x = 350,390,198.93/21,332.34
  6. Step 6: Final answer
    x = 16,425.31

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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.