Home / 25,675.10-38,512.65-20,491.10

Finding the Fourth Proportional to 25,675.10, 38,512.65 and 20,491.10

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Solution

The fourth proportional to 25,675.10, 38,512.65 and 20,491.10 is: 30,736.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,675.10 : 38,512.65 = 20,491.10 : x
  2. Step 2: Convert to fraction form
    25,675.10/38,512.65 = 20,491.10/x
  3. Step 3: Cross multiply
    25,675.10x = 38,512.65 × 20,491.10
  4. Step 4: Simplify right side
    25,675.10x = 789,166,562.42
  5. Step 5: Solve for x
    x = 789,166,562.42/25,675.10
  6. Step 6: Final answer
    x = 30,736.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.