Home / 30,933.84-42,687.90-18,187.14

Finding the Fourth Proportional to 30,933.84, 42,687.90 and 18,187.14

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Solution

The fourth proportional to 30,933.84, 42,687.90 and 18,187.14 is: 25,097.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.84 : 42,687.90 = 18,187.14 : x
  2. Step 2: Convert to fraction form
    30,933.84/42,687.90 = 18,187.14/x
  3. Step 3: Cross multiply
    30,933.84x = 42,687.90 × 18,187.14
  4. Step 4: Simplify right side
    30,933.84x = 776,370,813.61
  5. Step 5: Solve for x
    x = 776,370,813.61/30,933.84
  6. Step 6: Final answer
    x = 25,097.78

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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.