Home / 20,210-27,891.69-11,826.50

Finding the Fourth Proportional to 20,210, 27,891.69 and 11,826.50

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Solution

The fourth proportional to 20,210, 27,891.69 and 11,826.50 is: 16,321.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210 : 27,891.69 = 11,826.50 : x
  2. Step 2: Convert to fraction form
    20,210/27,891.69 = 11,826.50/x
  3. Step 3: Cross multiply
    20,210x = 27,891.69 × 11,826.50
  4. Step 4: Simplify right side
    20,210x = 329,861,071.79
  5. Step 5: Solve for x
    x = 329,861,071.79/20,210
  6. Step 6: Final answer
    x = 16,321.68

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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.