Home / 13,820.13-20,733.79-3,960.18

Finding the Fourth Proportional to 13,820.13, 20,733.79 and 3,960.18

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Solution

The fourth proportional to 13,820.13, 20,733.79 and 3,960.18 is: 5,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.13 : 20,733.79 = 3,960.18 : x
  2. Step 2: Convert to fraction form
    13,820.13/20,733.79 = 3,960.18/x
  3. Step 3: Cross multiply
    13,820.13x = 20,733.79 × 3,960.18
  4. Step 4: Simplify right side
    13,820.13x = 82,109,492.14
  5. Step 5: Solve for x
    x = 82,109,492.14/13,820.13
  6. Step 6: Final answer
    x = 5,941.30

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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.