Home / 20,134.05-27,782.48-11,180.34

Finding the Fourth Proportional to 20,134.05, 27,782.48 and 11,180.34

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Solution

The fourth proportional to 20,134.05, 27,782.48 and 11,180.34 is: 15,427.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.05 : 27,782.48 = 11,180.34 : x
  2. Step 2: Convert to fraction form
    20,134.05/27,782.48 = 11,180.34/x
  3. Step 3: Cross multiply
    20,134.05x = 27,782.48 × 11,180.34
  4. Step 4: Simplify right side
    20,134.05x = 310,617,475.04
  5. Step 5: Solve for x
    x = 310,617,475.04/20,134.05
  6. Step 6: Final answer
    x = 15,427.47

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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.