Home / 30,399.12-45,584.10-12,859.38

Finding the Fourth Proportional to 30,399.12, 45,584.10 and 12,859.38

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Solution

The fourth proportional to 30,399.12, 45,584.10 and 12,859.38 is: 19,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,399.12 : 45,584.10 = 12,859.38 : x
  2. Step 2: Convert to fraction form
    30,399.12/45,584.10 = 12,859.38/x
  3. Step 3: Cross multiply
    30,399.12x = 45,584.10 × 12,859.38
  4. Step 4: Simplify right side
    30,399.12x = 586,183,263.86
  5. Step 5: Solve for x
    x = 586,183,263.86/30,399.12
  6. Step 6: Final answer
    x = 19,282.90

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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.