Home / 20,405.08-30,579.94-18,356.82

Finding the Fourth Proportional to 20,405.08, 30,579.94 and 18,356.82

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Solution

The fourth proportional to 20,405.08, 30,579.94 and 18,356.82 is: 27,510.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.08 : 30,579.94 = 18,356.82 : x
  2. Step 2: Convert to fraction form
    20,405.08/30,579.94 = 18,356.82/x
  3. Step 3: Cross multiply
    20,405.08x = 30,579.94 × 18,356.82
  4. Step 4: Simplify right side
    20,405.08x = 561,350,454.19
  5. Step 5: Solve for x
    x = 561,350,454.19/20,405.08
  6. Step 6: Final answer
    x = 27,510.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.