Home / 19,018.58-28,540.29-8,630.42

Finding the Fourth Proportional to 19,018.58, 28,540.29 and 8,630.42

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Solution

The fourth proportional to 19,018.58, 28,540.29 and 8,630.42 is: 12,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,018.58 : 28,540.29 = 8,630.42 : x
  2. Step 2: Convert to fraction form
    19,018.58/28,540.29 = 8,630.42/x
  3. Step 3: Cross multiply
    19,018.58x = 28,540.29 × 8,630.42
  4. Step 4: Simplify right side
    19,018.58x = 246,314,689.62
  5. Step 5: Solve for x
    x = 246,314,689.62/19,018.58
  6. Step 6: Final answer
    x = 12,951.27

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1.5x scale

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.