Home / 12,815.42-19,211.68-6,895.48

Finding the Fourth Proportional to 12,815.42, 19,211.68 and 6,895.48

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Solution

The fourth proportional to 12,815.42, 19,211.68 and 6,895.48 is: 10,337.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.42 : 19,211.68 = 6,895.48 : x
  2. Step 2: Convert to fraction form
    12,815.42/19,211.68 = 6,895.48/x
  3. Step 3: Cross multiply
    12,815.42x = 19,211.68 × 6,895.48
  4. Step 4: Simplify right side
    12,815.42x = 132,473,751.82
  5. Step 5: Solve for x
    x = 132,473,751.82/12,815.42
  6. Step 6: Final answer
    x = 10,337.06

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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.