Home / 13,639.97-20,459.98-3,779.27

Finding the Fourth Proportional to 13,639.97, 20,459.98 and 3,779.27

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Solution

The fourth proportional to 13,639.97, 20,459.98 and 3,779.27 is: 5,668.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.97 : 20,459.98 = 3,779.27 : x
  2. Step 2: Convert to fraction form
    13,639.97/20,459.98 = 3,779.27/x
  3. Step 3: Cross multiply
    13,639.97x = 20,459.98 × 3,779.27
  4. Step 4: Simplify right side
    13,639.97x = 77,323,784.87
  5. Step 5: Solve for x
    x = 77,323,784.87/13,639.97
  6. Step 6: Final answer
    x = 5,668.91

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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.