Home / 12,479.73-17,221.90-6,814.46

Finding the Fourth Proportional to 12,479.73, 17,221.90 and 6,814.46

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Solution

The fourth proportional to 12,479.73, 17,221.90 and 6,814.46 is: 9,403.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.73 : 17,221.90 = 6,814.46 : x
  2. Step 2: Convert to fraction form
    12,479.73/17,221.90 = 6,814.46/x
  3. Step 3: Cross multiply
    12,479.73x = 17,221.90 × 6,814.46
  4. Step 4: Simplify right side
    12,479.73x = 117,357,914.60
  5. Step 5: Solve for x
    x = 117,357,914.60/12,479.73
  6. Step 6: Final answer
    x = 9,403.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.