Home / 21,668.45-29,899.45-12,107.14

Finding the Fourth Proportional to 21,668.45, 29,899.45 and 12,107.14

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Solution

The fourth proportional to 21,668.45, 29,899.45 and 12,107.14 is: 16,706.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.45 : 29,899.45 = 12,107.14 : x
  2. Step 2: Convert to fraction form
    21,668.45/29,899.45 = 12,107.14/x
  3. Step 3: Cross multiply
    21,668.45x = 29,899.45 × 12,107.14
  4. Step 4: Simplify right side
    21,668.45x = 361,996,827.07
  5. Step 5: Solve for x
    x = 361,996,827.07/21,668.45
  6. Step 6: Final answer
    x = 16,706.17

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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.