Home / 28,563.20-42,825.60-12,972.80

Finding the Fourth Proportional to 28,563.20, 42,825.60 and 12,972.80

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Solution

The fourth proportional to 28,563.20, 42,825.60 and 12,972.80 is: 19,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.20 : 42,825.60 = 12,972.80 : x
  2. Step 2: Convert to fraction form
    28,563.20/42,825.60 = 12,972.80/x
  3. Step 3: Cross multiply
    28,563.20x = 42,825.60 × 12,972.80
  4. Step 4: Simplify right side
    28,563.20x = 555,567,943.68
  5. Step 5: Solve for x
    x = 555,567,943.68/28,563.20
  6. Step 6: Final answer
    x = 19,450.48

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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.