Home / 12,759.78-19,139.67-6,953.29

Finding the Fourth Proportional to 12,759.78, 19,139.67 and 6,953.29

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Solution

The fourth proportional to 12,759.78, 19,139.67 and 6,953.29 is: 10,429.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.78 : 19,139.67 = 6,953.29 : x
  2. Step 2: Convert to fraction form
    12,759.78/19,139.67 = 6,953.29/x
  3. Step 3: Cross multiply
    12,759.78x = 19,139.67 × 6,953.29
  4. Step 4: Simplify right side
    12,759.78x = 133,083,676.01
  5. Step 5: Solve for x
    x = 133,083,676.01/12,759.78
  6. Step 6: Final answer
    x = 10,429.94

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Similar ratio
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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.