Home / 13,661.92-20,490.45-3,798.55

Finding the Fourth Proportional to 13,661.92, 20,490.45 and 3,798.55

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Solution

The fourth proportional to 13,661.92, 20,490.45 and 3,798.55 is: 5,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.92 : 20,490.45 = 3,798.55 : x
  2. Step 2: Convert to fraction form
    13,661.92/20,490.45 = 3,798.55/x
  3. Step 3: Cross multiply
    13,661.92x = 20,490.45 × 3,798.55
  4. Step 4: Simplify right side
    13,661.92x = 77,833,998.85
  5. Step 5: Solve for x
    x = 77,833,998.85/13,661.92
  6. Step 6: Final answer
    x = 5,697.15

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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.