Home / 14,105.21-21,135.56-5,208.29

Finding the Fourth Proportional to 14,105.21, 21,135.56 and 5,208.29

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Solution

The fourth proportional to 14,105.21, 21,135.56 and 5,208.29 is: 7,804.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,105.21 : 21,135.56 = 5,208.29 : x
  2. Step 2: Convert to fraction form
    14,105.21/21,135.56 = 5,208.29/x
  3. Step 3: Cross multiply
    14,105.21x = 21,135.56 × 5,208.29
  4. Step 4: Simplify right side
    14,105.21x = 110,080,099.75
  5. Step 5: Solve for x
    x = 110,080,099.75/14,105.21
  6. Step 6: Final answer
    x = 7,804.22

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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.