Home / 13,211.50-19,822.23-8,540.44

Finding the Fourth Proportional to 13,211.50, 19,822.23 and 8,540.44

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Solution

The fourth proportional to 13,211.50, 19,822.23 and 8,540.44 is: 12,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.50 : 19,822.23 = 8,540.44 : x
  2. Step 2: Convert to fraction form
    13,211.50/19,822.23 = 8,540.44/x
  3. Step 3: Cross multiply
    13,211.50x = 19,822.23 × 8,540.44
  4. Step 4: Simplify right side
    13,211.50x = 169,290,565.98
  5. Step 5: Solve for x
    x = 169,290,565.98/13,211.50
  6. Step 6: Final answer
    x = 12,813.88

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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.