Home / 13,992.18-20,985.92-4,129.11

Finding the Fourth Proportional to 13,992.18, 20,985.92 and 4,129.11

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Solution

The fourth proportional to 13,992.18, 20,985.92 and 4,129.11 is: 6,192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.18 : 20,985.92 = 4,129.11 : x
  2. Step 2: Convert to fraction form
    13,992.18/20,985.92 = 4,129.11/x
  3. Step 3: Cross multiply
    13,992.18x = 20,985.92 × 4,129.11
  4. Step 4: Simplify right side
    13,992.18x = 86,653,166.97
  5. Step 5: Solve for x
    x = 86,653,166.97/13,992.18
  6. Step 6: Final answer
    x = 6,192.97

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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.