Home / 12,814.14-17,682.39-7,148.46

Finding the Fourth Proportional to 12,814.14, 17,682.39 and 7,148.46

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Solution

The fourth proportional to 12,814.14, 17,682.39 and 7,148.46 is: 9,864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,814.14 : 17,682.39 = 7,148.46 : x
  2. Step 2: Convert to fraction form
    12,814.14/17,682.39 = 7,148.46/x
  3. Step 3: Cross multiply
    12,814.14x = 17,682.39 × 7,148.46
  4. Step 4: Simplify right side
    12,814.14x = 126,401,857.62
  5. Step 5: Solve for x
    x = 126,401,857.62/12,814.14
  6. Step 6: Final answer
    x = 9,864.25

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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.