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Finding the Fourth Proportional to 25,951.70, 35,812.86 and 15,879.35

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Solution

The fourth proportional to 25,951.70, 35,812.86 and 15,879.35 is: 21,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,951.70 : 35,812.86 = 15,879.35 : x
  2. Step 2: Convert to fraction form
    25,951.70/35,812.86 = 15,879.35/x
  3. Step 3: Cross multiply
    25,951.70x = 35,812.86 × 15,879.35
  4. Step 4: Simplify right side
    25,951.70x = 568,684,938.44
  5. Step 5: Solve for x
    x = 568,684,938.44/25,951.70
  6. Step 6: Final answer
    x = 21,913.21

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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.