Home / 20,798.99-31,201.55-7,650.39

Finding the Fourth Proportional to 20,798.99, 31,201.55 and 7,650.39

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Solution

The fourth proportional to 20,798.99, 31,201.55 and 7,650.39 is: 11,476.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.99 : 31,201.55 = 7,650.39 : x
  2. Step 2: Convert to fraction form
    20,798.99/31,201.55 = 7,650.39/x
  3. Step 3: Cross multiply
    20,798.99x = 31,201.55 × 7,650.39
  4. Step 4: Simplify right side
    20,798.99x = 238,704,026.10
  5. Step 5: Solve for x
    x = 238,704,026.10/20,798.99
  6. Step 6: Final answer
    x = 11,476.71

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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.