Home / 13,186.42-19,779.63-3,326.47

Finding the Fourth Proportional to 13,186.42, 19,779.63 and 3,326.47

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Solution

The fourth proportional to 13,186.42, 19,779.63 and 3,326.47 is: 4,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.42 : 19,779.63 = 3,326.47 : x
  2. Step 2: Convert to fraction form
    13,186.42/19,779.63 = 3,326.47/x
  3. Step 3: Cross multiply
    13,186.42x = 19,779.63 × 3,326.47
  4. Step 4: Simplify right side
    13,186.42x = 65,796,345.81
  5. Step 5: Solve for x
    x = 65,796,345.81/13,186.42
  6. Step 6: Final answer
    x = 4,989.71

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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.