Home / 13,812.43-20,718.36-3,951.64

Finding the Fourth Proportional to 13,812.43, 20,718.36 and 3,951.64

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Solution

The fourth proportional to 13,812.43, 20,718.36 and 3,951.64 is: 5,927.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.43 : 20,718.36 = 3,951.64 : x
  2. Step 2: Convert to fraction form
    13,812.43/20,718.36 = 3,951.64/x
  3. Step 3: Cross multiply
    13,812.43x = 20,718.36 × 3,951.64
  4. Step 4: Simplify right side
    13,812.43x = 81,871,500.11
  5. Step 5: Solve for x
    x = 81,871,500.11/13,812.43
  6. Step 6: Final answer
    x = 5,927.38

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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.