Home / 13,639.95-20,459.94-3,779.25

Finding the Fourth Proportional to 13,639.95, 20,459.94 and 3,779.25

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Solution

The fourth proportional to 13,639.95, 20,459.94 and 3,779.25 is: 5,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.95 : 20,459.94 = 3,779.25 : x
  2. Step 2: Convert to fraction form
    13,639.95/20,459.94 = 3,779.25/x
  3. Step 3: Cross multiply
    13,639.95x = 20,459.94 × 3,779.25
  4. Step 4: Simplify right side
    13,639.95x = 77,323,228.25
  5. Step 5: Solve for x
    x = 77,323,228.25/13,639.95
  6. Step 6: Final answer
    x = 5,668.88

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Similar ratio
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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.