Home / 21,335.45-29,443.25-11,775.78

Finding the Fourth Proportional to 21,335.45, 29,443.25 and 11,775.78

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Solution

The fourth proportional to 21,335.45, 29,443.25 and 11,775.78 is: 16,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.45 : 29,443.25 = 11,775.78 : x
  2. Step 2: Convert to fraction form
    21,335.45/29,443.25 = 11,775.78/x
  3. Step 3: Cross multiply
    21,335.45x = 29,443.25 × 11,775.78
  4. Step 4: Simplify right side
    21,335.45x = 346,717,197.69
  5. Step 5: Solve for x
    x = 346,717,197.69/21,335.45
  6. Step 6: Final answer
    x = 16,250.76

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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.