Home / 30,933.03-42,687.13-18,187.65

Finding the Fourth Proportional to 30,933.03, 42,687.13 and 18,187.65

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Solution

The fourth proportional to 30,933.03, 42,687.13 and 18,187.65 is: 25,098.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.03 : 42,687.13 = 18,187.65 : x
  2. Step 2: Convert to fraction form
    30,933.03/42,687.13 = 18,187.65/x
  3. Step 3: Cross multiply
    30,933.03x = 42,687.13 × 18,187.65
  4. Step 4: Simplify right side
    30,933.03x = 776,378,579.94
  5. Step 5: Solve for x
    x = 776,378,579.94/30,933.03
  6. Step 6: Final answer
    x = 25,098.69

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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.