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Finding the Fourth Proportional to 12,706.92, 19,060.98 and 6,138.63

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Solution

The fourth proportional to 12,706.92, 19,060.98 and 6,138.63 is: 9,208.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.92 : 19,060.98 = 6,138.63 : x
  2. Step 2: Convert to fraction form
    12,706.92/19,060.98 = 6,138.63/x
  3. Step 3: Cross multiply
    12,706.92x = 19,060.98 × 6,138.63
  4. Step 4: Simplify right side
    12,706.92x = 117,008,303.66
  5. Step 5: Solve for x
    x = 117,008,303.66/12,706.92
  6. Step 6: Final answer
    x = 9,208.23

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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.