Home / 30,795.12-42,504.07-20,021.24

Finding the Fourth Proportional to 30,795.12, 42,504.07 and 20,021.24

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Solution

The fourth proportional to 30,795.12, 42,504.07 and 20,021.24 is: 27,633.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,795.12 : 42,504.07 = 20,021.24 : x
  2. Step 2: Convert to fraction form
    30,795.12/42,504.07 = 20,021.24/x
  3. Step 3: Cross multiply
    30,795.12x = 42,504.07 × 20,021.24
  4. Step 4: Simplify right side
    30,795.12x = 850,984,186.45
  5. Step 5: Solve for x
    x = 850,984,186.45/30,795.12
  6. Step 6: Final answer
    x = 27,633.74

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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.