Home / 21,836.43-30,131.24-12,275.01

Finding the Fourth Proportional to 21,836.43, 30,131.24 and 12,275.01

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Solution

The fourth proportional to 21,836.43, 30,131.24 and 12,275.01 is: 16,937.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.43 : 30,131.24 = 12,275.01 : x
  2. Step 2: Convert to fraction form
    21,836.43/30,131.24 = 12,275.01/x
  3. Step 3: Cross multiply
    21,836.43x = 30,131.24 × 12,275.01
  4. Step 4: Simplify right side
    21,836.43x = 369,861,210.94
  5. Step 5: Solve for x
    x = 369,861,210.94/21,836.43
  6. Step 6: Final answer
    x = 16,937.81

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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.