Home / 13,738.72-20,637.22-12,938.88

Finding the Fourth Proportional to 13,738.72, 20,637.22 and 12,938.88

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Solution

The fourth proportional to 13,738.72, 20,637.22 and 12,938.88 is: 19,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.72 : 20,637.22 = 12,938.88 : x
  2. Step 2: Convert to fraction form
    13,738.72/20,637.22 = 12,938.88/x
  3. Step 3: Cross multiply
    13,738.72x = 20,637.22 × 12,938.88
  4. Step 4: Simplify right side
    13,738.72x = 267,022,513.11
  5. Step 5: Solve for x
    x = 267,022,513.11/13,738.72
  6. Step 6: Final answer
    x = 19,435.76

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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.