Home / 20,455.89-30,646.75-9,371.85

Finding the Fourth Proportional to 20,455.89, 30,646.75 and 9,371.85

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Solution

The fourth proportional to 20,455.89, 30,646.75 and 9,371.85 is: 14,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.89 : 30,646.75 = 9,371.85 : x
  2. Step 2: Convert to fraction form
    20,455.89/30,646.75 = 9,371.85/x
  3. Step 3: Cross multiply
    20,455.89x = 30,646.75 × 9,371.85
  4. Step 4: Simplify right side
    20,455.89x = 287,216,743.99
  5. Step 5: Solve for x
    x = 287,216,743.99/20,455.89
  6. Step 6: Final answer
    x = 14,040.78

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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.