Home / 30,636.29-45,960.59-13,991.85

Finding the Fourth Proportional to 30,636.29, 45,960.59 and 13,991.85

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Solution

The fourth proportional to 30,636.29, 45,960.59 and 13,991.85 is: 20,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,636.29 : 45,960.59 = 13,991.85 : x
  2. Step 2: Convert to fraction form
    30,636.29/45,960.59 = 13,991.85/x
  3. Step 3: Cross multiply
    30,636.29x = 45,960.59 × 13,991.85
  4. Step 4: Simplify right side
    30,636.29x = 643,073,611.23
  5. Step 5: Solve for x
    x = 643,073,611.23/30,636.29
  6. Step 6: Final answer
    x = 20,990.58

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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.