Home / 20,133.29-27,785.18-11,180.86

Finding the Fourth Proportional to 20,133.29, 27,785.18 and 11,180.86

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Solution

The fourth proportional to 20,133.29, 27,785.18 and 11,180.86 is: 15,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.29 : 27,785.18 = 11,180.86 : x
  2. Step 2: Convert to fraction form
    20,133.29/27,785.18 = 11,180.86/x
  3. Step 3: Cross multiply
    20,133.29x = 27,785.18 × 11,180.86
  4. Step 4: Simplify right side
    20,133.29x = 310,662,012.82
  5. Step 5: Solve for x
    x = 310,662,012.82/20,133.29
  6. Step 6: Final answer
    x = 15,430.27

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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.