Home / 21,133.70-31,677.67-13,743.46

Finding the Fourth Proportional to 21,133.70, 31,677.67 and 13,743.46

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Solution

The fourth proportional to 21,133.70, 31,677.67 and 13,743.46 is: 20,600.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.70 : 31,677.67 = 13,743.46 : x
  2. Step 2: Convert to fraction form
    21,133.70/31,677.67 = 13,743.46/x
  3. Step 3: Cross multiply
    21,133.70x = 31,677.67 × 13,743.46
  4. Step 4: Simplify right side
    21,133.70x = 435,360,835.37
  5. Step 5: Solve for x
    x = 435,360,835.37/21,133.70
  6. Step 6: Final answer
    x = 20,600.31

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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.