Home / 13,712.51-20,568.66-3,851.80

Finding the Fourth Proportional to 13,712.51, 20,568.66 and 3,851.80

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Solution

The fourth proportional to 13,712.51, 20,568.66 and 3,851.80 is: 5,777.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.51 : 20,568.66 = 3,851.80 : x
  2. Step 2: Convert to fraction form
    13,712.51/20,568.66 = 3,851.80/x
  3. Step 3: Cross multiply
    13,712.51x = 20,568.66 × 3,851.80
  4. Step 4: Simplify right side
    13,712.51x = 79,226,364.59
  5. Step 5: Solve for x
    x = 79,226,364.59/13,712.51
  6. Step 6: Final answer
    x = 5,777.67

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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.