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Finding the Fourth Proportional to 25,951.90, 35,814.34 and 15,880.16

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Solution

The fourth proportional to 25,951.90, 35,814.34 and 15,880.16 is: 21,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,951.90 : 35,814.34 = 15,880.16 : x
  2. Step 2: Convert to fraction form
    25,951.90/35,814.34 = 15,880.16/x
  3. Step 3: Cross multiply
    25,951.90x = 35,814.34 × 15,880.16
  4. Step 4: Simplify right side
    25,951.90x = 568,737,191.02
  5. Step 5: Solve for x
    x = 568,737,191.02/25,951.90
  6. Step 6: Final answer
    x = 21,915.05

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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.