Home / 28,855.20-43,299.12-15,708.48

Finding the Fourth Proportional to 28,855.20, 43,299.12 and 15,708.48

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Solution

The fourth proportional to 28,855.20, 43,299.12 and 15,708.48 is: 23,571.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.20 : 43,299.12 = 15,708.48 : x
  2. Step 2: Convert to fraction form
    28,855.20/43,299.12 = 15,708.48/x
  3. Step 3: Cross multiply
    28,855.20x = 43,299.12 × 15,708.48
  4. Step 4: Simplify right side
    28,855.20x = 680,163,360.54
  5. Step 5: Solve for x
    x = 680,163,360.54/28,855.20
  6. Step 6: Final answer
    x = 23,571.60

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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.