Home / 13,845.66-20,779.42-6,446.31

Finding the Fourth Proportional to 13,845.66, 20,779.42 and 6,446.31

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Solution

The fourth proportional to 13,845.66, 20,779.42 and 6,446.31 is: 9,674.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.66 : 20,779.42 = 6,446.31 : x
  2. Step 2: Convert to fraction form
    13,845.66/20,779.42 = 6,446.31/x
  3. Step 3: Cross multiply
    13,845.66x = 20,779.42 × 6,446.31
  4. Step 4: Simplify right side
    13,845.66x = 133,950,582.94
  5. Step 5: Solve for x
    x = 133,950,582.94/13,845.66
  6. Step 6: Final answer
    x = 9,674.55

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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.