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Finding the Fourth Proportional to 12,676.88, 18,923.86 and 10,710.80

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Solution

The fourth proportional to 12,676.88, 18,923.86 and 10,710.80 is: 15,988.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.88 : 18,923.86 = 10,710.80 : x
  2. Step 2: Convert to fraction form
    12,676.88/18,923.86 = 10,710.80/x
  3. Step 3: Cross multiply
    12,676.88x = 18,923.86 × 10,710.80
  4. Step 4: Simplify right side
    12,676.88x = 202,689,679.69
  5. Step 5: Solve for x
    x = 202,689,679.69/12,676.88
  6. Step 6: Final answer
    x = 15,988.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.