Home / 30,960.24-42,723.99-16,812.78

Finding the Fourth Proportional to 30,960.24, 42,723.99 and 16,812.78

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Solution

The fourth proportional to 30,960.24, 42,723.99 and 16,812.78 is: 23,201.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,960.24 : 42,723.99 = 16,812.78 : x
  2. Step 2: Convert to fraction form
    30,960.24/42,723.99 = 16,812.78/x
  3. Step 3: Cross multiply
    30,960.24x = 42,723.99 × 16,812.78
  4. Step 4: Simplify right side
    30,960.24x = 718,309,044.59
  5. Step 5: Solve for x
    x = 718,309,044.59/30,960.24
  6. Step 6: Final answer
    x = 23,201.02

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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.