Home / 13,745.42-18,968.67-7,457.78

Finding the Fourth Proportional to 13,745.42, 18,968.67 and 7,457.78

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Solution

The fourth proportional to 13,745.42, 18,968.67 and 7,457.78 is: 10,291.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.42 : 18,968.67 = 7,457.78 : x
  2. Step 2: Convert to fraction form
    13,745.42/18,968.67 = 7,457.78/x
  3. Step 3: Cross multiply
    13,745.42x = 18,968.67 × 7,457.78
  4. Step 4: Simplify right side
    13,745.42x = 141,464,167.75
  5. Step 5: Solve for x
    x = 141,464,167.75/13,745.42
  6. Step 6: Final answer
    x = 10,291.73

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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.