Home / 21,165.21-29,210.09-11,735.60

Finding the Fourth Proportional to 21,165.21, 29,210.09 and 11,735.60

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Solution

The fourth proportional to 21,165.21, 29,210.09 and 11,735.60 is: 16,196.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.21 : 29,210.09 = 11,735.60 : x
  2. Step 2: Convert to fraction form
    21,165.21/29,210.09 = 11,735.60/x
  3. Step 3: Cross multiply
    21,165.21x = 29,210.09 × 11,735.60
  4. Step 4: Simplify right side
    21,165.21x = 342,797,727.48
  5. Step 5: Solve for x
    x = 342,797,727.48/21,165.21
  6. Step 6: Final answer
    x = 16,196.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.