Home / 20,210.40-27,891.05-11,712.54

Finding the Fourth Proportional to 20,210.40, 27,891.05 and 11,712.54

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Solution

The fourth proportional to 20,210.40, 27,891.05 and 11,712.54 is: 16,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.40 : 27,891.05 = 11,712.54 : x
  2. Step 2: Convert to fraction form
    20,210.40/27,891.05 = 11,712.54/x
  3. Step 3: Cross multiply
    20,210.40x = 27,891.05 × 11,712.54
  4. Step 4: Simplify right side
    20,210.40x = 326,674,980.20
  5. Step 5: Solve for x
    x = 326,674,980.20/20,210.40
  6. Step 6: Final answer
    x = 16,163.71

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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.