Home / 12,915.82-19,377.51-6,679.36

Finding the Fourth Proportional to 12,915.82, 19,377.51 and 6,679.36

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Solution

The fourth proportional to 12,915.82, 19,377.51 and 6,679.36 is: 10,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.82 : 19,377.51 = 6,679.36 : x
  2. Step 2: Convert to fraction form
    12,915.82/19,377.51 = 6,679.36/x
  3. Step 3: Cross multiply
    12,915.82x = 19,377.51 × 6,679.36
  4. Step 4: Simplify right side
    12,915.82x = 129,429,365.19
  5. Step 5: Solve for x
    x = 129,429,365.19/12,915.82
  6. Step 6: Final answer
    x = 10,020.99

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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.