Home / 21,058.62-31,587.84-8,575.86

Finding the Fourth Proportional to 21,058.62, 31,587.84 and 8,575.86

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Solution

The fourth proportional to 21,058.62, 31,587.84 and 8,575.86 is: 12,863.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.62 : 31,587.84 = 8,575.86 : x
  2. Step 2: Convert to fraction form
    21,058.62/31,587.84 = 8,575.86/x
  3. Step 3: Cross multiply
    21,058.62x = 31,587.84 × 8,575.86
  4. Step 4: Simplify right side
    21,058.62x = 270,892,893.54
  5. Step 5: Solve for x
    x = 270,892,893.54/21,058.62
  6. Step 6: Final answer
    x = 12,863.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.