Home / 28,470.49-42,694.70-11,821.95

Finding the Fourth Proportional to 28,470.49, 42,694.70 and 11,821.95

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Solution

The fourth proportional to 28,470.49, 42,694.70 and 11,821.95 is: 17,728.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.49 : 42,694.70 = 11,821.95 : x
  2. Step 2: Convert to fraction form
    28,470.49/42,694.70 = 11,821.95/x
  3. Step 3: Cross multiply
    28,470.49x = 42,694.70 × 11,821.95
  4. Step 4: Simplify right side
    28,470.49x = 504,734,549.56
  5. Step 5: Solve for x
    x = 504,734,549.56/28,470.49
  6. Step 6: Final answer
    x = 17,728.34

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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.