Home / 30,504.29-45,689.78-12,680.91

Finding the Fourth Proportional to 30,504.29, 45,689.78 and 12,680.91

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Solution

The fourth proportional to 30,504.29, 45,689.78 and 12,680.91 is: 18,993.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,504.29 : 45,689.78 = 12,680.91 : x
  2. Step 2: Convert to fraction form
    30,504.29/45,689.78 = 12,680.91/x
  3. Step 3: Cross multiply
    30,504.29x = 45,689.78 × 12,680.91
  4. Step 4: Simplify right side
    30,504.29x = 579,388,019.80
  5. Step 5: Solve for x
    x = 579,388,019.80/30,504.29
  6. Step 6: Final answer
    x = 18,993.66

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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.