Home / 28,115.20-42,121.60-22,892.80

Finding the Fourth Proportional to 28,115.20, 42,121.60 and 22,892.80

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Solution

The fourth proportional to 28,115.20, 42,121.60 and 22,892.80 is: 34,297.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.20 : 42,121.60 = 22,892.80 : x
  2. Step 2: Convert to fraction form
    28,115.20/42,121.60 = 22,892.80/x
  3. Step 3: Cross multiply
    28,115.20x = 42,121.60 × 22,892.80
  4. Step 4: Simplify right side
    28,115.20x = 964,281,364.48
  5. Step 5: Solve for x
    x = 964,281,364.48/28,115.20
  6. Step 6: Final answer
    x = 34,297.51

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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.