Home / 15,905.25-23,857.92-4,218.57

Finding the Fourth Proportional to 15,905.25, 23,857.92 and 4,218.57

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Solution

The fourth proportional to 15,905.25, 23,857.92 and 4,218.57 is: 6,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.25 : 23,857.92 = 4,218.57 : x
  2. Step 2: Convert to fraction form
    15,905.25/23,857.92 = 4,218.57/x
  3. Step 3: Cross multiply
    15,905.25x = 23,857.92 × 4,218.57
  4. Step 4: Simplify right side
    15,905.25x = 100,646,305.57
  5. Step 5: Solve for x
    x = 100,646,305.57/15,905.25
  6. Step 6: Final answer
    x = 6,327.87

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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.