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Finding the Fourth Proportional to 25,701.10, 38,555.70 and 8,172.70

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Solution

The fourth proportional to 25,701.10, 38,555.70 and 8,172.70 is: 12,260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,701.10 : 38,555.70 = 8,172.70 : x
  2. Step 2: Convert to fraction form
    25,701.10/38,555.70 = 8,172.70/x
  3. Step 3: Cross multiply
    25,701.10x = 38,555.70 × 8,172.70
  4. Step 4: Simplify right side
    25,701.10x = 315,104,169.39
  5. Step 5: Solve for x
    x = 315,104,169.39/25,701.10
  6. Step 6: Final answer
    x = 12,260.34

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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.