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Finding the Fourth Proportional to 34,257.70, 51,385.82 and 15,789.70

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Solution

The fourth proportional to 34,257.70, 51,385.82 and 15,789.70 is: 23,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,257.70 : 51,385.82 = 15,789.70 : x
  2. Step 2: Convert to fraction form
    34,257.70/51,385.82 = 15,789.70/x
  3. Step 3: Cross multiply
    34,257.70x = 51,385.82 × 15,789.70
  4. Step 4: Simplify right side
    34,257.70x = 811,366,682.05
  5. Step 5: Solve for x
    x = 811,366,682.05/34,257.70
  6. Step 6: Final answer
    x = 23,684.21

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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.