Home / 30,123.34-45,135.73-18,241.11

Finding the Fourth Proportional to 30,123.34, 45,135.73 and 18,241.11

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Solution

The fourth proportional to 30,123.34, 45,135.73 and 18,241.11 is: 27,331.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.34 : 45,135.73 = 18,241.11 : x
  2. Step 2: Convert to fraction form
    30,123.34/45,135.73 = 18,241.11/x
  3. Step 3: Cross multiply
    30,123.34x = 45,135.73 × 18,241.11
  4. Step 4: Simplify right side
    30,123.34x = 823,325,838.66
  5. Step 5: Solve for x
    x = 823,325,838.66/30,123.34
  6. Step 6: Final answer
    x = 27,331.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.