Home / 30,131.09-41,581.64-16,519.91

Finding the Fourth Proportional to 30,131.09, 41,581.64 and 16,519.91

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Solution

The fourth proportional to 30,131.09, 41,581.64 and 16,519.91 is: 22,797.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.09 : 41,581.64 = 16,519.91 : x
  2. Step 2: Convert to fraction form
    30,131.09/41,581.64 = 16,519.91/x
  3. Step 3: Cross multiply
    30,131.09x = 41,581.64 × 16,519.91
  4. Step 4: Simplify right side
    30,131.09x = 686,924,950.45
  5. Step 5: Solve for x
    x = 686,924,950.45/30,131.09
  6. Step 6: Final answer
    x = 22,797.88

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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.