Home / 30,936.75-42,693.35-17,508

Finding the Fourth Proportional to 30,936.75, 42,693.35 and 17,508

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Solution

The fourth proportional to 30,936.75, 42,693.35 and 17,508 is: 24,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.75 : 42,693.35 = 17,508 : x
  2. Step 2: Convert to fraction form
    30,936.75/42,693.35 = 17,508/x
  3. Step 3: Cross multiply
    30,936.75x = 42,693.35 × 17,508
  4. Step 4: Simplify right side
    30,936.75x = 747,475,215.57
  5. Step 5: Solve for x
    x = 747,475,215.57/30,936.75
  6. Step 6: Final answer
    x = 24,161.40

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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.