Home / 28,449.20-42,674.88-10,920.80

Finding the Fourth Proportional to 28,449.20, 42,674.88 and 10,920.80

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Solution

The fourth proportional to 28,449.20, 42,674.88 and 10,920.80 is: 16,381.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.20 : 42,674.88 = 10,920.80 : x
  2. Step 2: Convert to fraction form
    28,449.20/42,674.88 = 10,920.80/x
  3. Step 3: Cross multiply
    28,449.20x = 42,674.88 × 10,920.80
  4. Step 4: Simplify right side
    28,449.20x = 466,043,829.50
  5. Step 5: Solve for x
    x = 466,043,829.50/28,449.20
  6. Step 6: Final answer
    x = 16,381.61

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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.