Home / 20,123.46-27,770.28-11,170.98

Finding the Fourth Proportional to 20,123.46, 27,770.28 and 11,170.98

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Solution

The fourth proportional to 20,123.46, 27,770.28 and 11,170.98 is: 15,415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.46 : 27,770.28 = 11,170.98 : x
  2. Step 2: Convert to fraction form
    20,123.46/27,770.28 = 11,170.98/x
  3. Step 3: Cross multiply
    20,123.46x = 27,770.28 × 11,170.98
  4. Step 4: Simplify right side
    20,123.46x = 310,221,242.47
  5. Step 5: Solve for x
    x = 310,221,242.47/20,123.46
  6. Step 6: Final answer
    x = 15,415.90

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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.