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Finding the Fourth Proportional to 25,713.78, 35,480.22 and 15,099.54

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Solution

The fourth proportional to 25,713.78, 35,480.22 and 15,099.54 is: 20,834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,713.78 : 35,480.22 = 15,099.54 : x
  2. Step 2: Convert to fraction form
    25,713.78/35,480.22 = 15,099.54/x
  3. Step 3: Cross multiply
    25,713.78x = 35,480.22 × 15,099.54
  4. Step 4: Simplify right side
    25,713.78x = 535,735,001.10
  5. Step 5: Solve for x
    x = 535,735,001.10/25,713.78
  6. Step 6: Final answer
    x = 20,834.55

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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.