Home / 30,636.80-45,961.34-13,992.36

Finding the Fourth Proportional to 30,636.80, 45,961.34 and 13,992.36

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Solution

The fourth proportional to 30,636.80, 45,961.34 and 13,992.36 is: 20,991.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,636.80 : 45,961.34 = 13,992.36 : x
  2. Step 2: Convert to fraction form
    30,636.80/45,961.34 = 13,992.36/x
  3. Step 3: Cross multiply
    30,636.80x = 45,961.34 × 13,992.36
  4. Step 4: Simplify right side
    30,636.80x = 643,107,615.36
  5. Step 5: Solve for x
    x = 643,107,615.36/30,636.80
  6. Step 6: Final answer
    x = 20,991.34

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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.