Home / 21,206.54-29,265.36-11,775.20

Finding the Fourth Proportional to 21,206.54, 29,265.36 and 11,775.20

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Solution

The fourth proportional to 21,206.54, 29,265.36 and 11,775.20 is: 16,249.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.54 : 29,265.36 = 11,775.20 : x
  2. Step 2: Convert to fraction form
    21,206.54/29,265.36 = 11,775.20/x
  3. Step 3: Cross multiply
    21,206.54x = 29,265.36 × 11,775.20
  4. Step 4: Simplify right side
    21,206.54x = 344,605,467.07
  5. Step 5: Solve for x
    x = 344,605,467.07/21,206.54
  6. Step 6: Final answer
    x = 16,249.96

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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.