Home / 14,109.40-21,164.10-12,748.60

Finding the Fourth Proportional to 14,109.40, 21,164.10 and 12,748.60

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Solution

The fourth proportional to 14,109.40, 21,164.10 and 12,748.60 is: 19,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.40 : 21,164.10 = 12,748.60 : x
  2. Step 2: Convert to fraction form
    14,109.40/21,164.10 = 12,748.60/x
  3. Step 3: Cross multiply
    14,109.40x = 21,164.10 × 12,748.60
  4. Step 4: Simplify right side
    14,109.40x = 269,812,645.26
  5. Step 5: Solve for x
    x = 269,812,645.26/14,109.40
  6. Step 6: Final answer
    x = 19,122.90

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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.