Home / 20,508.30-28,288.62-12,536.70

Finding the Fourth Proportional to 20,508.30, 28,288.62 and 12,536.70

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Solution

The fourth proportional to 20,508.30, 28,288.62 and 12,536.70 is: 17,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.30 : 28,288.62 = 12,536.70 : x
  2. Step 2: Convert to fraction form
    20,508.30/28,288.62 = 12,536.70/x
  3. Step 3: Cross multiply
    20,508.30x = 28,288.62 × 12,536.70
  4. Step 4: Simplify right side
    20,508.30x = 354,645,942.35
  5. Step 5: Solve for x
    x = 354,645,942.35/20,508.30
  6. Step 6: Final answer
    x = 17,292.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.