Home / 13,779.14-20,669.92-4,419.59

Finding the Fourth Proportional to 13,779.14, 20,669.92 and 4,419.59

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Solution

The fourth proportional to 13,779.14, 20,669.92 and 4,419.59 is: 6,629.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.14 : 20,669.92 = 4,419.59 : x
  2. Step 2: Convert to fraction form
    13,779.14/20,669.92 = 4,419.59/x
  3. Step 3: Cross multiply
    13,779.14x = 20,669.92 × 4,419.59
  4. Step 4: Simplify right side
    13,779.14x = 91,352,457.33
  5. Step 5: Solve for x
    x = 91,352,457.33/13,779.14
  6. Step 6: Final answer
    x = 6,629.77

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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.