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Finding the Fourth Proportional to 12,959.77, 19,450.04 and 6,721.57

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Solution

The fourth proportional to 12,959.77, 19,450.04 and 6,721.57 is: 10,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.77 : 19,450.04 = 6,721.57 : x
  2. Step 2: Convert to fraction form
    12,959.77/19,450.04 = 6,721.57/x
  3. Step 3: Cross multiply
    12,959.77x = 19,450.04 × 6,721.57
  4. Step 4: Simplify right side
    12,959.77x = 130,734,805.36
  5. Step 5: Solve for x
    x = 130,734,805.36/12,959.77
  6. Step 6: Final answer
    x = 10,087.74

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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.