Home / 20,355.10-30,533.05-13,379.58

Finding the Fourth Proportional to 20,355.10, 30,533.05 and 13,379.58

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Solution

The fourth proportional to 20,355.10, 30,533.05 and 13,379.58 is: 20,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.10 : 30,533.05 = 13,379.58 : x
  2. Step 2: Convert to fraction form
    20,355.10/30,533.05 = 13,379.58/x
  3. Step 3: Cross multiply
    20,355.10x = 30,533.05 × 13,379.58
  4. Step 4: Simplify right side
    20,355.10x = 408,519,401.84
  5. Step 5: Solve for x
    x = 408,519,401.84/20,355.10
  6. Step 6: Final answer
    x = 20,069.64

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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.