Home / 12,489.43-17,235.21-6,824.06

Finding the Fourth Proportional to 12,489.43, 17,235.21 and 6,824.06

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Solution

The fourth proportional to 12,489.43, 17,235.21 and 6,824.06 is: 9,417.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.43 : 17,235.21 = 6,824.06 : x
  2. Step 2: Convert to fraction form
    12,489.43/17,235.21 = 6,824.06/x
  3. Step 3: Cross multiply
    12,489.43x = 17,235.21 × 6,824.06
  4. Step 4: Simplify right side
    12,489.43x = 117,614,020.98
  5. Step 5: Solve for x
    x = 117,614,020.98/12,489.43
  6. Step 6: Final answer
    x = 9,417.09

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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.