Home / 13,723.38-18,938.43-7,435.74

Finding the Fourth Proportional to 13,723.38, 18,938.43 and 7,435.74

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Solution

The fourth proportional to 13,723.38, 18,938.43 and 7,435.74 is: 10,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.38 : 18,938.43 = 7,435.74 : x
  2. Step 2: Convert to fraction form
    13,723.38/18,938.43 = 7,435.74/x
  3. Step 3: Cross multiply
    13,723.38x = 18,938.43 × 7,435.74
  4. Step 4: Simplify right side
    13,723.38x = 140,821,241.49
  5. Step 5: Solve for x
    x = 140,821,241.49/13,723.38
  6. Step 6: Final answer
    x = 10,261.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.