Home / 21,107.47-29,129.07-11,676.10

Finding the Fourth Proportional to 21,107.47, 29,129.07 and 11,676.10

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Solution

The fourth proportional to 21,107.47, 29,129.07 and 11,676.10 is: 16,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.47 : 29,129.07 = 11,676.10 : x
  2. Step 2: Convert to fraction form
    21,107.47/29,129.07 = 11,676.10/x
  3. Step 3: Cross multiply
    21,107.47x = 29,129.07 × 11,676.10
  4. Step 4: Simplify right side
    21,107.47x = 340,113,934.23
  5. Step 5: Solve for x
    x = 340,113,934.23/21,107.47
  6. Step 6: Final answer
    x = 16,113.44

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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.