Home / 13,684.16-20,517.63-5,782.61

Finding the Fourth Proportional to 13,684.16, 20,517.63 and 5,782.61

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Solution

The fourth proportional to 13,684.16, 20,517.63 and 5,782.61 is: 8,670.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.16 : 20,517.63 = 5,782.61 : x
  2. Step 2: Convert to fraction form
    13,684.16/20,517.63 = 5,782.61/x
  3. Step 3: Cross multiply
    13,684.16x = 20,517.63 × 5,782.61
  4. Step 4: Simplify right side
    13,684.16x = 118,645,328.14
  5. Step 5: Solve for x
    x = 118,645,328.14/13,684.16
  6. Step 6: Final answer
    x = 8,670.27

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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.