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Finding the Fourth Proportional to 16,810.70, 25,240.35 and 12,679.70

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Solution

The fourth proportional to 16,810.70, 25,240.35 and 12,679.70 is: 19,037.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,810.70 : 25,240.35 = 12,679.70 : x
  2. Step 2: Convert to fraction form
    16,810.70/25,240.35 = 12,679.70/x
  3. Step 3: Cross multiply
    16,810.70x = 25,240.35 × 12,679.70
  4. Step 4: Simplify right side
    16,810.70x = 320,040,065.90
  5. Step 5: Solve for x
    x = 320,040,065.90/16,810.70
  6. Step 6: Final answer
    x = 19,037.88

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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.