Home / 25,815.45-35,621.10-15,203.64

Finding the Fourth Proportional to 25,815.45, 35,621.10 and 15,203.64

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Solution

The fourth proportional to 25,815.45, 35,621.10 and 15,203.64 is: 20,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,815.45 : 35,621.10 = 15,203.64 : x
  2. Step 2: Convert to fraction form
    25,815.45/35,621.10 = 15,203.64/x
  3. Step 3: Cross multiply
    25,815.45x = 35,621.10 × 15,203.64
  4. Step 4: Simplify right side
    25,815.45x = 541,570,380.80
  5. Step 5: Solve for x
    x = 541,570,380.80/25,815.45
  6. Step 6: Final answer
    x = 20,978.54

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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.