Home / 18,961.10-28,418.58-13,416.04

Finding the Fourth Proportional to 18,961.10, 28,418.58 and 13,416.04

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Solution

The fourth proportional to 18,961.10, 28,418.58 and 13,416.04 is: 20,107.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.10 : 28,418.58 = 13,416.04 : x
  2. Step 2: Convert to fraction form
    18,961.10/28,418.58 = 13,416.04/x
  3. Step 3: Cross multiply
    18,961.10x = 28,418.58 × 13,416.04
  4. Step 4: Simplify right side
    18,961.10x = 381,264,806.02
  5. Step 5: Solve for x
    x = 381,264,806.02/18,961.10
  6. Step 6: Final answer
    x = 20,107.74

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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.