Home / 20,158.96-27,821.05-11,207.30

Finding the Fourth Proportional to 20,158.96, 27,821.05 and 11,207.30

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Solution

The fourth proportional to 20,158.96, 27,821.05 and 11,207.30 is: 15,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.96 : 27,821.05 = 11,207.30 : x
  2. Step 2: Convert to fraction form
    20,158.96/27,821.05 = 11,207.30/x
  3. Step 3: Cross multiply
    20,158.96x = 27,821.05 × 11,207.30
  4. Step 4: Simplify right side
    20,158.96x = 311,798,866.95
  5. Step 5: Solve for x
    x = 311,798,866.95/20,158.96
  6. Step 6: Final answer
    x = 15,467.01

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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.