Home / 13,590.18-20,382.84-3,728.16

Finding the Fourth Proportional to 13,590.18, 20,382.84 and 3,728.16

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Solution

The fourth proportional to 13,590.18, 20,382.84 and 3,728.16 is: 5,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.18 : 20,382.84 = 3,728.16 : x
  2. Step 2: Convert to fraction form
    13,590.18/20,382.84 = 3,728.16/x
  3. Step 3: Cross multiply
    13,590.18x = 20,382.84 × 3,728.16
  4. Step 4: Simplify right side
    13,590.18x = 75,990,488.77
  5. Step 5: Solve for x
    x = 75,990,488.77/13,590.18
  6. Step 6: Final answer
    x = 5,591.57

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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.