Home / 12,815.09-19,215.79-6,572.57

Finding the Fourth Proportional to 12,815.09, 19,215.79 and 6,572.57

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Solution

The fourth proportional to 12,815.09, 19,215.79 and 6,572.57 is: 9,855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.09 : 19,215.79 = 6,572.57 : x
  2. Step 2: Convert to fraction form
    12,815.09/19,215.79 = 6,572.57/x
  3. Step 3: Cross multiply
    12,815.09x = 19,215.79 × 6,572.57
  4. Step 4: Simplify right side
    12,815.09x = 126,297,124.88
  5. Step 5: Solve for x
    x = 126,297,124.88/12,815.09
  6. Step 6: Final answer
    x = 9,855.34

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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.