Home / 30,137.68-45,214.03-21,270.33

Finding the Fourth Proportional to 30,137.68, 45,214.03 and 21,270.33

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Solution

The fourth proportional to 30,137.68, 45,214.03 and 21,270.33 is: 31,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.68 : 45,214.03 = 21,270.33 : x
  2. Step 2: Convert to fraction form
    30,137.68/45,214.03 = 21,270.33/x
  3. Step 3: Cross multiply
    30,137.68x = 45,214.03 × 21,270.33
  4. Step 4: Simplify right side
    30,137.68x = 961,717,278.87
  5. Step 5: Solve for x
    x = 961,717,278.87/30,137.68
  6. Step 6: Final answer
    x = 31,910.80

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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.