Home / 12,814.30-19,221.45-5,416.84

Finding the Fourth Proportional to 12,814.30, 19,221.45 and 5,416.84

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Solution

The fourth proportional to 12,814.30, 19,221.45 and 5,416.84 is: 8,125.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,814.30 : 19,221.45 = 5,416.84 : x
  2. Step 2: Convert to fraction form
    12,814.30/19,221.45 = 5,416.84/x
  3. Step 3: Cross multiply
    12,814.30x = 19,221.45 × 5,416.84
  4. Step 4: Simplify right side
    12,814.30x = 104,119,519.22
  5. Step 5: Solve for x
    x = 104,119,519.22/12,814.30
  6. Step 6: Final answer
    x = 8,125.26

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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.