Home / 30,390.57-41,921.46-18,282.65

Finding the Fourth Proportional to 30,390.57, 41,921.46 and 18,282.65

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Solution

The fourth proportional to 30,390.57, 41,921.46 and 18,282.65 is: 25,219.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.57 : 41,921.46 = 18,282.65 : x
  2. Step 2: Convert to fraction form
    30,390.57/41,921.46 = 18,282.65/x
  3. Step 3: Cross multiply
    30,390.57x = 41,921.46 × 18,282.65
  4. Step 4: Simplify right side
    30,390.57x = 766,435,171.06
  5. Step 5: Solve for x
    x = 766,435,171.06/30,390.57
  6. Step 6: Final answer
    x = 25,219.51

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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.