Home / 12,619.40-18,929.10-4,301.60

Finding the Fourth Proportional to 12,619.40, 18,929.10 and 4,301.60

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Solution

The fourth proportional to 12,619.40, 18,929.10 and 4,301.60 is: 6,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.40 : 18,929.10 = 4,301.60 : x
  2. Step 2: Convert to fraction form
    12,619.40/18,929.10 = 4,301.60/x
  3. Step 3: Cross multiply
    12,619.40x = 18,929.10 × 4,301.60
  4. Step 4: Simplify right side
    12,619.40x = 81,425,416.56
  5. Step 5: Solve for x
    x = 81,425,416.56/12,619.40
  6. Step 6: Final answer
    x = 6,452.40

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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.