Home / 21,829.10-30,135.51-16,973.06

Finding the Fourth Proportional to 21,829.10, 30,135.51 and 16,973.06

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Solution

The fourth proportional to 21,829.10, 30,135.51 and 16,973.06 is: 23,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.10 : 30,135.51 = 16,973.06 : x
  2. Step 2: Convert to fraction form
    21,829.10/30,135.51 = 16,973.06/x
  3. Step 3: Cross multiply
    21,829.10x = 30,135.51 × 16,973.06
  4. Step 4: Simplify right side
    21,829.10x = 511,491,668.68
  5. Step 5: Solve for x
    x = 511,491,668.68/21,829.10
  6. Step 6: Final answer
    x = 23,431.65

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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.