Home / 21,676.11-29,911.28-12,716.43

Finding the Fourth Proportional to 21,676.11, 29,911.28 and 12,716.43

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Solution

The fourth proportional to 21,676.11, 29,911.28 and 12,716.43 is: 17,547.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.11 : 29,911.28 = 12,716.43 : x
  2. Step 2: Convert to fraction form
    21,676.11/29,911.28 = 12,716.43/x
  3. Step 3: Cross multiply
    21,676.11x = 29,911.28 × 12,716.43
  4. Step 4: Simplify right side
    21,676.11x = 380,364,698.33
  5. Step 5: Solve for x
    x = 380,364,698.33/21,676.11
  6. Step 6: Final answer
    x = 17,547.65

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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.