Home / 30,137.60-45,175.20-13,505.60

Finding the Fourth Proportional to 30,137.60, 45,175.20 and 13,505.60

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Solution

The fourth proportional to 30,137.60, 45,175.20 and 13,505.60 is: 20,244.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.60 : 45,175.20 = 13,505.60 : x
  2. Step 2: Convert to fraction form
    30,137.60/45,175.20 = 13,505.60/x
  3. Step 3: Cross multiply
    30,137.60x = 45,175.20 × 13,505.60
  4. Step 4: Simplify right side
    30,137.60x = 610,118,181.12
  5. Step 5: Solve for x
    x = 610,118,181.12/30,137.60
  6. Step 6: Final answer
    x = 20,244.42

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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.