Home / 20,511.71-30,767.26-12,508.83

Finding the Fourth Proportional to 20,511.71, 30,767.26 and 12,508.83

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Solution

The fourth proportional to 20,511.71, 30,767.26 and 12,508.83 is: 18,763.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.71 : 30,767.26 = 12,508.83 : x
  2. Step 2: Convert to fraction form
    20,511.71/30,767.26 = 12,508.83/x
  3. Step 3: Cross multiply
    20,511.71x = 30,767.26 × 12,508.83
  4. Step 4: Simplify right side
    20,511.71x = 384,862,424.91
  5. Step 5: Solve for x
    x = 384,862,424.91/20,511.71
  6. Step 6: Final answer
    x = 18,763.06

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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.