Home / 20,210.83-27,889.50-11,135.79

Finding the Fourth Proportional to 20,210.83, 27,889.50 and 11,135.79

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Solution

The fourth proportional to 20,210.83, 27,889.50 and 11,135.79 is: 15,366.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.83 : 27,889.50 = 11,135.79 : x
  2. Step 2: Convert to fraction form
    20,210.83/27,889.50 = 11,135.79/x
  3. Step 3: Cross multiply
    20,210.83x = 27,889.50 × 11,135.79
  4. Step 4: Simplify right side
    20,210.83x = 310,571,615.21
  5. Step 5: Solve for x
    x = 310,571,615.21/20,210.83
  6. Step 6: Final answer
    x = 15,366.59

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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.