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Finding the Fourth Proportional to 25,706.30, 35,469.30 and 15,089.78

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Solution

The fourth proportional to 25,706.30, 35,469.30 and 15,089.78 is: 20,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,706.30 : 35,469.30 = 15,089.78 : x
  2. Step 2: Convert to fraction form
    25,706.30/35,469.30 = 15,089.78/x
  3. Step 3: Cross multiply
    25,706.30x = 35,469.30 × 15,089.78
  4. Step 4: Simplify right side
    25,706.30x = 535,223,933.75
  5. Step 5: Solve for x
    x = 535,223,933.75/25,706.30
  6. Step 6: Final answer
    x = 20,820.73

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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.