Home / 13,605.04-20,388.39-10,819.36

Finding the Fourth Proportional to 13,605.04, 20,388.39 and 10,819.36

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Solution

The fourth proportional to 13,605.04, 20,388.39 and 10,819.36 is: 16,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.04 : 20,388.39 = 10,819.36 : x
  2. Step 2: Convert to fraction form
    13,605.04/20,388.39 = 10,819.36/x
  3. Step 3: Cross multiply
    13,605.04x = 20,388.39 × 10,819.36
  4. Step 4: Simplify right side
    13,605.04x = 220,589,331.23
  5. Step 5: Solve for x
    x = 220,589,331.23/13,605.04
  6. Step 6: Final answer
    x = 16,213.80

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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.