Home / 12,815.24-19,221.91-6,156.50

Finding the Fourth Proportional to 12,815.24, 19,221.91 and 6,156.50

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Solution

The fourth proportional to 12,815.24, 19,221.91 and 6,156.50 is: 9,234.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.24 : 19,221.91 = 6,156.50 : x
  2. Step 2: Convert to fraction form
    12,815.24/19,221.91 = 6,156.50/x
  3. Step 3: Cross multiply
    12,815.24x = 19,221.91 × 6,156.50
  4. Step 4: Simplify right side
    12,815.24x = 118,339,577.41
  5. Step 5: Solve for x
    x = 118,339,577.41/12,815.24
  6. Step 6: Final answer
    x = 9,234.29

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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.