Home / 30,520.55-45,781.44-20,057.28

Finding the Fourth Proportional to 30,520.55, 45,781.44 and 20,057.28

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Solution

The fourth proportional to 30,520.55, 45,781.44 and 20,057.28 is: 30,086.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,520.55 : 45,781.44 = 20,057.28 : x
  2. Step 2: Convert to fraction form
    30,520.55/45,781.44 = 20,057.28/x
  3. Step 3: Cross multiply
    30,520.55x = 45,781.44 × 20,057.28
  4. Step 4: Simplify right side
    30,520.55x = 918,250,913.99
  5. Step 5: Solve for x
    x = 918,250,913.99/30,520.55
  6. Step 6: Final answer
    x = 30,086.31

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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.