Home / 25,719.96-35,478.78-15,107.64

Finding the Fourth Proportional to 25,719.96, 35,478.78 and 15,107.64

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Solution

The fourth proportional to 25,719.96, 35,478.78 and 15,107.64 is: 20,839.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,719.96 : 35,478.78 = 15,107.64 : x
  2. Step 2: Convert to fraction form
    25,719.96/35,478.78 = 15,107.64/x
  3. Step 3: Cross multiply
    25,719.96x = 35,478.78 × 15,107.64
  4. Step 4: Simplify right side
    25,719.96x = 536,000,635.88
  5. Step 5: Solve for x
    x = 536,000,635.88/25,719.96
  6. Step 6: Final answer
    x = 20,839.87

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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.