Home / 30,469.05-45,689.76-13,828.41

Finding the Fourth Proportional to 30,469.05, 45,689.76 and 13,828.41

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Solution

The fourth proportional to 30,469.05, 45,689.76 and 13,828.41 is: 20,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,469.05 : 45,689.76 = 13,828.41 : x
  2. Step 2: Convert to fraction form
    30,469.05/45,689.76 = 13,828.41/x
  3. Step 3: Cross multiply
    30,469.05x = 45,689.76 × 13,828.41
  4. Step 4: Simplify right side
    30,469.05x = 631,816,734.08
  5. Step 5: Solve for x
    x = 631,816,734.08/30,469.05
  6. Step 6: Final answer
    x = 20,736.35

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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.