Home / 20,511.99-30,762.45-8,665.83

Finding the Fourth Proportional to 20,511.99, 30,762.45 and 8,665.83

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Solution

The fourth proportional to 20,511.99, 30,762.45 and 8,665.83 is: 12,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.99 : 30,762.45 = 8,665.83 : x
  2. Step 2: Convert to fraction form
    20,511.99/30,762.45 = 8,665.83/x
  3. Step 3: Cross multiply
    20,511.99x = 30,762.45 × 8,665.83
  4. Step 4: Simplify right side
    20,511.99x = 266,582,162.08
  5. Step 5: Solve for x
    x = 266,582,162.08/20,511.99
  6. Step 6: Final answer
    x = 12,996.41

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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.