Home / 18,945.90-28,382.48-10,600.64

Finding the Fourth Proportional to 18,945.90, 28,382.48 and 10,600.64

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Solution

The fourth proportional to 18,945.90, 28,382.48 and 10,600.64 is: 15,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.90 : 28,382.48 = 10,600.64 : x
  2. Step 2: Convert to fraction form
    18,945.90/28,382.48 = 10,600.64/x
  3. Step 3: Cross multiply
    18,945.90x = 28,382.48 × 10,600.64
  4. Step 4: Simplify right side
    18,945.90x = 300,872,257.87
  5. Step 5: Solve for x
    x = 300,872,257.87/18,945.90
  6. Step 6: Final answer
    x = 15,880.60

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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.