Home / 21,857.23-30,110.29-17,379.55

Finding the Fourth Proportional to 21,857.23, 30,110.29 and 17,379.55

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Solution

The fourth proportional to 21,857.23, 30,110.29 and 17,379.55 is: 23,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.23 : 30,110.29 = 17,379.55 : x
  2. Step 2: Convert to fraction form
    21,857.23/30,110.29 = 17,379.55/x
  3. Step 3: Cross multiply
    21,857.23x = 30,110.29 × 17,379.55
  4. Step 4: Simplify right side
    21,857.23x = 523,303,290.57
  5. Step 5: Solve for x
    x = 523,303,290.57/21,857.23
  6. Step 6: Final answer
    x = 23,941.89

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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.