Home / 30,811.14-42,519.38-16,663.99

Finding the Fourth Proportional to 30,811.14, 42,519.38 and 16,663.99

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Solution

The fourth proportional to 30,811.14, 42,519.38 and 16,663.99 is: 22,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.14 : 42,519.38 = 16,663.99 : x
  2. Step 2: Convert to fraction form
    30,811.14/42,519.38 = 16,663.99/x
  3. Step 3: Cross multiply
    30,811.14x = 42,519.38 × 16,663.99
  4. Step 4: Simplify right side
    30,811.14x = 708,542,333.51
  5. Step 5: Solve for x
    x = 708,542,333.51/30,811.14
  6. Step 6: Final answer
    x = 22,996.30

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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.