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Finding the Fourth Proportional to 12,149.70, 16,760.84 and 7,110.80

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Solution

The fourth proportional to 12,149.70, 16,760.84 and 7,110.80 is: 9,809.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.70 : 16,760.84 = 7,110.80 : x
  2. Step 2: Convert to fraction form
    12,149.70/16,760.84 = 7,110.80/x
  3. Step 3: Cross multiply
    12,149.70x = 16,760.84 × 7,110.80
  4. Step 4: Simplify right side
    12,149.70x = 119,182,981.07
  5. Step 5: Solve for x
    x = 119,182,981.07/12,149.70
  6. Step 6: Final answer
    x = 9,809.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.