Home / 21,173.90-31,766.66-17,215.31

Finding the Fourth Proportional to 21,173.90, 31,766.66 and 17,215.31

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Solution

The fourth proportional to 21,173.90, 31,766.66 and 17,215.31 is: 25,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.90 : 31,766.66 = 17,215.31 : x
  2. Step 2: Convert to fraction form
    21,173.90/31,766.66 = 17,215.31/x
  3. Step 3: Cross multiply
    21,173.90x = 31,766.66 × 17,215.31
  4. Step 4: Simplify right side
    21,173.90x = 546,872,654.65
  5. Step 5: Solve for x
    x = 546,872,654.65/21,173.90
  6. Step 6: Final answer
    x = 25,827.68

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1.5x scale

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.