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Finding the Fourth Proportional to 12,760.90, 19,137.07 and 5,363.98

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Solution

The fourth proportional to 12,760.90, 19,137.07 and 5,363.98 is: 8,044.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.90 : 19,137.07 = 5,363.98 : x
  2. Step 2: Convert to fraction form
    12,760.90/19,137.07 = 5,363.98/x
  3. Step 3: Cross multiply
    12,760.90x = 19,137.07 × 5,363.98
  4. Step 4: Simplify right side
    12,760.90x = 102,650,860.74
  5. Step 5: Solve for x
    x = 102,650,860.74/12,760.90
  6. Step 6: Final answer
    x = 8,044.17

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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.