Home / 28,955.90-39,954-17,021.66

Finding the Fourth Proportional to 28,955.90, 39,954 and 17,021.66

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Solution

The fourth proportional to 28,955.90, 39,954 and 17,021.66 is: 23,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,955.90 : 39,954 = 17,021.66 : x
  2. Step 2: Convert to fraction form
    28,955.90/39,954 = 17,021.66/x
  3. Step 3: Cross multiply
    28,955.90x = 39,954 × 17,021.66
  4. Step 4: Simplify right side
    28,955.90x = 680,083,403.64
  5. Step 5: Solve for x
    x = 680,083,403.64/28,955.90
  6. Step 6: Final answer
    x = 23,486.87

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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.