Home / 15,839.16-21,857.30-8,668.94

Finding the Fourth Proportional to 15,839.16, 21,857.30 and 8,668.94

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Solution

The fourth proportional to 15,839.16, 21,857.30 and 8,668.94 is: 11,962.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.16 : 21,857.30 = 8,668.94 : x
  2. Step 2: Convert to fraction form
    15,839.16/21,857.30 = 8,668.94/x
  3. Step 3: Cross multiply
    15,839.16x = 21,857.30 × 8,668.94
  4. Step 4: Simplify right side
    15,839.16x = 189,479,622.26
  5. Step 5: Solve for x
    x = 189,479,622.26/15,839.16
  6. Step 6: Final answer
    x = 11,962.73

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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.