Home / 15,676.64-21,634.32-8,603.28

Finding the Fourth Proportional to 15,676.64, 21,634.32 and 8,603.28

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Solution

The fourth proportional to 15,676.64, 21,634.32 and 8,603.28 is: 11,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.64 : 21,634.32 = 8,603.28 : x
  2. Step 2: Convert to fraction form
    15,676.64/21,634.32 = 8,603.28/x
  3. Step 3: Cross multiply
    15,676.64x = 21,634.32 × 8,603.28
  4. Step 4: Simplify right side
    15,676.64x = 186,126,112.57
  5. Step 5: Solve for x
    x = 186,126,112.57/15,676.64
  6. Step 6: Final answer
    x = 11,872.83

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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.