Home / 21,107.96-29,130.48-11,676.32

Finding the Fourth Proportional to 21,107.96, 29,130.48 and 11,676.32

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Solution

The fourth proportional to 21,107.96, 29,130.48 and 11,676.32 is: 16,114.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.96 : 29,130.48 = 11,676.32 : x
  2. Step 2: Convert to fraction form
    21,107.96/29,130.48 = 11,676.32/x
  3. Step 3: Cross multiply
    21,107.96x = 29,130.48 × 11,676.32
  4. Step 4: Simplify right side
    21,107.96x = 340,136,806.23
  5. Step 5: Solve for x
    x = 340,136,806.23/21,107.96
  6. Step 6: Final answer
    x = 16,114.15

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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.