Home / 13,185.73-19,779.81-4,421.44

Finding the Fourth Proportional to 13,185.73, 19,779.81 and 4,421.44

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Solution

The fourth proportional to 13,185.73, 19,779.81 and 4,421.44 is: 6,632.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.73 : 19,779.81 = 4,421.44 : x
  2. Step 2: Convert to fraction form
    13,185.73/19,779.81 = 4,421.44/x
  3. Step 3: Cross multiply
    13,185.73x = 19,779.81 × 4,421.44
  4. Step 4: Simplify right side
    13,185.73x = 87,455,243.13
  5. Step 5: Solve for x
    x = 87,455,243.13/13,185.73
  6. Step 6: Final answer
    x = 6,632.57

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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.