Home / 12,479.42-17,221.46-6,814.15

Finding the Fourth Proportional to 12,479.42, 17,221.46 and 6,814.15

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Solution

The fourth proportional to 12,479.42, 17,221.46 and 6,814.15 is: 9,403.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.42 : 17,221.46 = 6,814.15 : x
  2. Step 2: Convert to fraction form
    12,479.42/17,221.46 = 6,814.15/x
  3. Step 3: Cross multiply
    12,479.42x = 17,221.46 × 6,814.15
  4. Step 4: Simplify right side
    12,479.42x = 117,349,491.48
  5. Step 5: Solve for x
    x = 117,349,491.48/12,479.42
  6. Step 6: Final answer
    x = 9,403.44

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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.