Home / 30,208.39-41,699.21-20,133.15

Finding the Fourth Proportional to 30,208.39, 41,699.21 and 20,133.15

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Solution

The fourth proportional to 30,208.39, 41,699.21 and 20,133.15 is: 27,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,208.39 : 41,699.21 = 20,133.15 : x
  2. Step 2: Convert to fraction form
    30,208.39/41,699.21 = 20,133.15/x
  3. Step 3: Cross multiply
    30,208.39x = 41,699.21 × 20,133.15
  4. Step 4: Simplify right side
    30,208.39x = 839,536,349.15
  5. Step 5: Solve for x
    x = 839,536,349.15/30,208.39
  6. Step 6: Final answer
    x = 27,791.50

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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.