Home / 28,399.25-42,604.35-12,816.88

Finding the Fourth Proportional to 28,399.25, 42,604.35 and 12,816.88

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Solution

The fourth proportional to 28,399.25, 42,604.35 and 12,816.88 is: 19,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.25 : 42,604.35 = 12,816.88 : x
  2. Step 2: Convert to fraction form
    28,399.25/42,604.35 = 12,816.88/x
  3. Step 3: Cross multiply
    28,399.25x = 42,604.35 × 12,816.88
  4. Step 4: Simplify right side
    28,399.25x = 546,054,628.41
  5. Step 5: Solve for x
    x = 546,054,628.41/28,399.25
  6. Step 6: Final answer
    x = 19,227.78

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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.