Home / 30,114.03-45,140.97-20,127.20

Finding the Fourth Proportional to 30,114.03, 45,140.97 and 20,127.20

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Solution

The fourth proportional to 30,114.03, 45,140.97 and 20,127.20 is: 30,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,114.03 : 45,140.97 = 20,127.20 : x
  2. Step 2: Convert to fraction form
    30,114.03/45,140.97 = 20,127.20/x
  3. Step 3: Cross multiply
    30,114.03x = 45,140.97 × 20,127.20
  4. Step 4: Simplify right side
    30,114.03x = 908,561,105.68
  5. Step 5: Solve for x
    x = 908,561,105.68/30,114.03
  6. Step 6: Final answer
    x = 30,170.69

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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.