Home / 13,992.30-20,988.63-4,131.72

Finding the Fourth Proportional to 13,992.30, 20,988.63 and 4,131.72

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Solution

The fourth proportional to 13,992.30, 20,988.63 and 4,131.72 is: 6,197.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.30 : 20,988.63 = 4,131.72 : x
  2. Step 2: Convert to fraction form
    13,992.30/20,988.63 = 4,131.72/x
  3. Step 3: Cross multiply
    13,992.30x = 20,988.63 × 4,131.72
  4. Step 4: Simplify right side
    13,992.30x = 86,719,142.34
  5. Step 5: Solve for x
    x = 86,719,142.34/13,992.30
  6. Step 6: Final answer
    x = 6,197.63

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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.