Home / 20,123.16-27,769.75-11,170.43

Finding the Fourth Proportional to 20,123.16, 27,769.75 and 11,170.43

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Solution

The fourth proportional to 20,123.16, 27,769.75 and 11,170.43 is: 15,415.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.16 : 27,769.75 = 11,170.43 : x
  2. Step 2: Convert to fraction form
    20,123.16/27,769.75 = 11,170.43/x
  3. Step 3: Cross multiply
    20,123.16x = 27,769.75 × 11,170.43
  4. Step 4: Simplify right side
    20,123.16x = 310,200,048.49
  5. Step 5: Solve for x
    x = 310,200,048.49/20,123.16
  6. Step 6: Final answer
    x = 15,415.08

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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.