Home / 14,103.60-21,097.08-12,820.56

Finding the Fourth Proportional to 14,103.60, 21,097.08 and 12,820.56

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Solution

The fourth proportional to 14,103.60, 21,097.08 and 12,820.56 is: 19,177.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,103.60 : 21,097.08 = 12,820.56 : x
  2. Step 2: Convert to fraction form
    14,103.60/21,097.08 = 12,820.56/x
  3. Step 3: Cross multiply
    14,103.60x = 21,097.08 × 12,820.56
  4. Step 4: Simplify right side
    14,103.60x = 270,476,379.96
  5. Step 5: Solve for x
    x = 270,476,379.96/14,103.60
  6. Step 6: Final answer
    x = 19,177.83

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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.