Home / 29,116.72-40,149.12-19,668.88

Finding the Fourth Proportional to 29,116.72, 40,149.12 and 19,668.88

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Solution

The fourth proportional to 29,116.72, 40,149.12 and 19,668.88 is: 27,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,116.72 : 40,149.12 = 19,668.88 : x
  2. Step 2: Convert to fraction form
    29,116.72/40,149.12 = 19,668.88/x
  3. Step 3: Cross multiply
    29,116.72x = 40,149.12 × 19,668.88
  4. Step 4: Simplify right side
    29,116.72x = 789,688,223.39
  5. Step 5: Solve for x
    x = 789,688,223.39/29,116.72
  6. Step 6: Final answer
    x = 27,121.47

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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.