Home / 13,605.27-20,402.34-4,242.12

Finding the Fourth Proportional to 13,605.27, 20,402.34 and 4,242.12

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Solution

The fourth proportional to 13,605.27, 20,402.34 and 4,242.12 is: 6,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.27 : 20,402.34 = 4,242.12 : x
  2. Step 2: Convert to fraction form
    13,605.27/20,402.34 = 4,242.12/x
  3. Step 3: Cross multiply
    13,605.27x = 20,402.34 × 4,242.12
  4. Step 4: Simplify right side
    13,605.27x = 86,549,174.56
  5. Step 5: Solve for x
    x = 86,549,174.56/13,605.27
  6. Step 6: Final answer
    x = 6,361.44

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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.