Home / 20,220.23-27,903.54-11,021.87

Finding the Fourth Proportional to 20,220.23, 27,903.54 and 11,021.87

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Solution

The fourth proportional to 20,220.23, 27,903.54 and 11,021.87 is: 15,209.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.23 : 27,903.54 = 11,021.87 : x
  2. Step 2: Convert to fraction form
    20,220.23/27,903.54 = 11,021.87/x
  3. Step 3: Cross multiply
    20,220.23x = 27,903.54 × 11,021.87
  4. Step 4: Simplify right side
    20,220.23x = 307,549,082.56
  5. Step 5: Solve for x
    x = 307,549,082.56/20,220.23
  6. Step 6: Final answer
    x = 15,209.97

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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.