Home / 25,329.20-38,015.40-11,310.80

Finding the Fourth Proportional to 25,329.20, 38,015.40 and 11,310.80

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Solution

The fourth proportional to 25,329.20, 38,015.40 and 11,310.80 is: 16,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,329.20 : 38,015.40 = 11,310.80 : x
  2. Step 2: Convert to fraction form
    25,329.20/38,015.40 = 11,310.80/x
  3. Step 3: Cross multiply
    25,329.20x = 38,015.40 × 11,310.80
  4. Step 4: Simplify right side
    25,329.20x = 429,984,586.32
  5. Step 5: Solve for x
    x = 429,984,586.32/25,329.20
  6. Step 6: Final answer
    x = 16,975.85

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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.