Home / 20,090.58-27,726.21-11,138.46

Finding the Fourth Proportional to 20,090.58, 27,726.21 and 11,138.46

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Solution

The fourth proportional to 20,090.58, 27,726.21 and 11,138.46 is: 15,371.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.58 : 27,726.21 = 11,138.46 : x
  2. Step 2: Convert to fraction form
    20,090.58/27,726.21 = 11,138.46/x
  3. Step 3: Cross multiply
    20,090.58x = 27,726.21 × 11,138.46
  4. Step 4: Simplify right side
    20,090.58x = 308,827,281.04
  5. Step 5: Solve for x
    x = 308,827,281.04/20,090.58
  6. Step 6: Final answer
    x = 15,371.75

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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.