Home / 14,130.72-21,195-3,600.72

Finding the Fourth Proportional to 14,130.72, 21,195 and 3,600.72

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Solution

The fourth proportional to 14,130.72, 21,195 and 3,600.72 is: 5,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.72 : 21,195 = 3,600.72 : x
  2. Step 2: Convert to fraction form
    14,130.72/21,195 = 3,600.72/x
  3. Step 3: Cross multiply
    14,130.72x = 21,195 × 3,600.72
  4. Step 4: Simplify right side
    14,130.72x = 76,317,260.40
  5. Step 5: Solve for x
    x = 76,317,260.40/14,130.72
  6. Step 6: Final answer
    x = 5,400.80

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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.