Home / 15,676.86-21,634.31-8,603.18

Finding the Fourth Proportional to 15,676.86, 21,634.31 and 8,603.18

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Solution

The fourth proportional to 15,676.86, 21,634.31 and 8,603.18 is: 11,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.86 : 21,634.31 = 8,603.18 : x
  2. Step 2: Convert to fraction form
    15,676.86/21,634.31 = 8,603.18/x
  3. Step 3: Cross multiply
    15,676.86x = 21,634.31 × 8,603.18
  4. Step 4: Simplify right side
    15,676.86x = 186,123,863.11
  5. Step 5: Solve for x
    x = 186,123,863.11/15,676.86
  6. Step 6: Final answer
    x = 11,872.52

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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.