Home / 21,984.25-30,379.67-16,669.21

Finding the Fourth Proportional to 21,984.25, 30,379.67 and 16,669.21

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Solution

The fourth proportional to 21,984.25, 30,379.67 and 16,669.21 is: 23,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.25 : 30,379.67 = 16,669.21 : x
  2. Step 2: Convert to fraction form
    21,984.25/30,379.67 = 16,669.21/x
  3. Step 3: Cross multiply
    21,984.25x = 30,379.67 × 16,669.21
  4. Step 4: Simplify right side
    21,984.25x = 506,405,015.61
  5. Step 5: Solve for x
    x = 506,405,015.61/21,984.25
  6. Step 6: Final answer
    x = 23,034.90

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1.5x scale

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.