Home / 30,629.12-42,284.24-20,610.24

Finding the Fourth Proportional to 30,629.12, 42,284.24 and 20,610.24

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Solution

The fourth proportional to 30,629.12, 42,284.24 and 20,610.24 is: 28,452.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.12 : 42,284.24 = 20,610.24 : x
  2. Step 2: Convert to fraction form
    30,629.12/42,284.24 = 20,610.24/x
  3. Step 3: Cross multiply
    30,629.12x = 42,284.24 × 20,610.24
  4. Step 4: Simplify right side
    30,629.12x = 871,488,334.62
  5. Step 5: Solve for x
    x = 871,488,334.62/30,629.12
  6. Step 6: Final answer
    x = 28,452.93

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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.