Home / 20,071.72-27,699.17-11,119.34

Finding the Fourth Proportional to 20,071.72, 27,699.17 and 11,119.34

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Solution

The fourth proportional to 20,071.72, 27,699.17 and 11,119.34 is: 15,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.72 : 27,699.17 = 11,119.34 : x
  2. Step 2: Convert to fraction form
    20,071.72/27,699.17 = 11,119.34/x
  3. Step 3: Cross multiply
    20,071.72x = 27,699.17 × 11,119.34
  4. Step 4: Simplify right side
    20,071.72x = 307,996,502.60
  5. Step 5: Solve for x
    x = 307,996,502.60/20,071.72
  6. Step 6: Final answer
    x = 15,344.80

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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.