Home / 13,982.10-20,924.55-12,815.70

Finding the Fourth Proportional to 13,982.10, 20,924.55 and 12,815.70

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Solution

The fourth proportional to 13,982.10, 20,924.55 and 12,815.70 is: 19,179.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.10 : 20,924.55 = 12,815.70 : x
  2. Step 2: Convert to fraction form
    13,982.10/20,924.55 = 12,815.70/x
  3. Step 3: Cross multiply
    13,982.10x = 20,924.55 × 12,815.70
  4. Step 4: Simplify right side
    13,982.10x = 268,162,755.44
  5. Step 5: Solve for x
    x = 268,162,755.44/13,982.10
  6. Step 6: Final answer
    x = 19,179.00

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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.