Home / 21,133.41-31,655.15-17,166.03

Finding the Fourth Proportional to 21,133.41, 31,655.15 and 17,166.03

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Solution

The fourth proportional to 21,133.41, 31,655.15 and 17,166.03 is: 25,712.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.41 : 31,655.15 = 17,166.03 : x
  2. Step 2: Convert to fraction form
    21,133.41/31,655.15 = 17,166.03/x
  3. Step 3: Cross multiply
    21,133.41x = 31,655.15 × 17,166.03
  4. Step 4: Simplify right side
    21,133.41x = 543,393,096.28
  5. Step 5: Solve for x
    x = 543,393,096.28/21,133.41
  6. Step 6: Final answer
    x = 25,712.52

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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.