Home / 18,991.10-28,463.56-13,446.04

Finding the Fourth Proportional to 18,991.10, 28,463.56 and 13,446.04

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Solution

The fourth proportional to 18,991.10, 28,463.56 and 13,446.04 is: 20,152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.10 : 28,463.56 = 13,446.04 : x
  2. Step 2: Convert to fraction form
    18,991.10/28,463.56 = 13,446.04/x
  3. Step 3: Cross multiply
    18,991.10x = 28,463.56 × 13,446.04
  4. Step 4: Simplify right side
    18,991.10x = 382,722,166.30
  5. Step 5: Solve for x
    x = 382,722,166.30/18,991.10
  6. Step 6: Final answer
    x = 20,152.71

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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.